Doctor Who

Cast Roles: S

• Sabaoth (Stephen Greif in Big Finish: Ghost Walk)
• Sabetha (6 episodes, e.g. Katharine Schofield in The Keys of Marinus: The Velvet Web)
• Sabian (Ian Hallard in Big Finish: Primeval)
• Sable (Rebecca Root in Big Finish: Zaltys)
• Sabor (3 episodes, e.g. Geoffrey Morris in Planet of the Spiders: Part Three)
• Saboteur (4 episodes, e.g. Scott Handcock in Big Finish: Innocence)
• Saccostrea (Beth Chalmers in Big Finish: Orbis)
• Sacker (4 episodes, e.g. Duncan Wisbey in Big Finish: Jago & Litefoot Series 05: The Age of Revolution)
• Sadia (2 episodes, e.g. Alex Tregear in Big Finish: Black Thursday)
• Sadie (Joanne McQuinn in A Town Called Mercy)
• Saf (Philip Edgerley in Big Finish: The Empire State)
• Safira Valtris/Dr Maria Backhouse (4 episodes, e.g. Jemma Churchill in Big Finish: Breaking Bubbles)
• Safiya (Petra Markham in The Crusade: The Wheel of Fortune)
• Safran (3 episodes, e.g. Brian Grellis in The Invisible Enemy: Part One)
• Sagan (4 episodes, e.g. Vincent Pickering in Warriors' Gate: Part One)
• Sai Chopra (2 episodes, e.g. Shobu Kapoor in Big Finish: Vortex Ice)
• Saibra (Pippa Bennett-Warner in Time Heist)
• Saibra Double (Johanna Johnson in Time Heist)
• Sailor (Wilf Scolding in Big Finish: Sargasso)
• Sailor (5 episodes, e.g. Peter Diamond in The Highlanders: Episode 4)
• Sailor (3 episodes, e.g. Marcus Shakesheff in Cold War)
• Sailor (Shadow) (37 episodes, e.g. Alan Crisp in Enlightenment: Part One)
• Sal (4 episodes, e.g. Taj Atwal in Big Finish: God Among Us - Part 3: A Mother's Son)
• Saladin (3 episodes, e.g. Bernard Kay in The Crusade: The Lion)
• Salamander (7 episodes, e.g. Patrick Troughton in The Enemy of the World: Episode 2)
• Salamar (4 episodes, e.g. Prentis Hancock in Planet of Evil: Part One)
• Salateen (4 episodes, e.g. Robert Glenister in The Caves of Androzani: Part One)
• Salaysia (Andrew Fettes in Big Finish: Nekromanteia)
• Sales Rep #2 (Tony Gibbons in Planet of the Ood)
• Salesman (Car) (Prasanna Puwanarajah in The Sarah Jane Adventures: The Mark of the Berserker: Episode Two)
• Salim (Tariq Bhatti in Big Finish: Scavenger)
• Salinger (John Novak in The TV Movie)
• Sally (2 episodes, e.g. Beth Goddard in Big Finish: The Third Doctor Adventures Volume 06: Poison of the Daleks)
• Sally (Helen Goldwyn in Big Finish: Doctor Who and the Pirates)
• Sally (Nia Roberts in Big Finish: The Hope)
• Sally Armstrong (4 episodes, e.g. Natalie Burt in Big Finish: Dark Eyes: 1: The Great War)
• Sally Calypso (Erika Macleod in Gridlock)
• Sally Jacobs (Anita Briem in The Christmas Invasion)
• Sally Lucas (Alison Thea-Skot in Big Finish: Rat Trap)
• Sally Morgan (3 episodes, e.g. Amy Pemberton in Big Finish: Black and White)
• Sally Sparrow (Carey Mulligan in Blink)
• Sally Taylor (Lorna Want in Big Finish: Brave New Town)
• Sally-Anne Stubbins (Clare Buckfield in Big Finish: The One Doctor)
• Saloon Bar Girl (Jean Pastell in The Daleks' Master Plan: The Feast of Steven)
• Saloran (6 episodes, e.g. Karen Henson in Big Finish: The Exterminators)
• Saloran Hardew (3 episodes, e.g. Karen Henson in Big Finish: Chapter Two)
• Saloran Haredew (Karen Henson in Big Finish: Chapter One)
• Salter, Mandy (Nicola Stapleton in Doctor Who (Miscellaneous): Dimensions In Time: Part Two)
• Salus Kade (3 episodes, e.g. Noel Clarke in Big Finish: The Fearless Part 1)
• Salvitore (Cris D'Annunzio in Torchwood: Immortal Sins)
• Sam (Dan Bottomley in Big Finish: The Conspiracy)
• Sam (Will Ash in Big Finish: The Condemned)
• Sam (Sam Sweeney in Class: The Lost)
• Sam (2 episodes, e.g. Toby Parkes in The Sarah Jane Adventures: The Mad Woman in the Attic: Episode One)
• Sam (Richard Cordery in Big Finish: A Town Called Fortune)
• Sam (4 episodes, e.g. Derek Carlyle in Big Finish: Counter-Measures: Series 3: Changing of the Guard)
• Sam (4 episodes, e.g. John Rolfe in The Moonbase: Episode 1)
• Sam (Matt Hemmerich in The Bells of Saint John)
• Sam Bishop (16 episodes, e.g. Warren Brown in Big Finish: UNIT: Shutdown: Power Cell)
• Sam Doyle (Angelo Tiffe in Torchwood: Submission)
• Sam Flint (Nicholas Briggs in Other Productions: The Airzone Solution)
• Sam Gold (Miles Richardson in Big Finish: The Sound of Fear)
• Sam Kirke (Ian Hayles in Big Finish: The Architects of History)
• Sam Rudge (Kevin White in The Mark of the Rani: Part One)
• Sam Sonora (4 episodes, e.g. Cory English in Big Finish: Doom Coalition: 2: Beachhead)
• Sam Swift (Rufus Hound in The Woman Who Lived)
• Samantha Briggs (6 episodes, e.g. Pauline Collins in The Faceless Ones: Episode 2)
• Samantha Thorn (7 episodes, e.g. Hannah Smith in Big Finish: Fear)
• Samantha Thorn/Computer (Hannah Smith in Big Finish: Scorpius)
• Samson (Jaydon Harris-Wallace in In The Forest Of The Night)
• Samson Griffin (Lee Ingleby in Big Finish: Terror Firma)
• Samuel (Jacob Dudman in Big Finish: The Helliax Rift)
• Samuel Belfrage (Rory Kinnear in Big Finish: Industrial Evolution)
• Samuel Wolfe (Toby Longworth in Big Finish: Timeless Passages)
• Sancroff (Colin McIntyre in Big Finish: The Sirens of Time)
• Sand Monster (2 episodes, e.g. Tom Sheridan in The Rescue: The Powerful Enemy)
• Sanders (4 episodes, e.g. Richard Todd in Kinda: Part One)
• Sandis-Fernis (4 episodes, e.g. Timothy Blore in Big Finish: The Sixth Doctor and Peri Volume 01: The Headless Ones)
• Sandman (2 episodes, e.g. Tom Wilton in Sleep No More)
• Sandra (Sian McDowell in The Christmas Invasion)
• Sandra (4 episodes, e.g. Diveen Henry in Big Finish: Aliens Among Us - Part 2: Love Rat)
• Sandra (Karen Seacombe in The Lodger)
• Sandra Morales (Noemi Del Rio in Torchwood: The Blood Line)
• Sandwich Shop Man (2 episodes, e.g. Patrice Etienne in Torchwood: Children Of Earth: Day One)
• Sandy/ Captain Karren (2 episodes, e.g. Sara Thom in Big Finish: Shadow Planet)
• Sanjit (4 episodes, e.g. Raj Ghatak in Big Finish: Stranded 1: Lost Property)
• Santa Claus (2 episodes, e.g. Nick Frost in Last Christmas)
• Santa Claus (Peter Sowerbutts in Big Finish: The Claws of Santa)
• Sanukuma Master (4 episodes, e.g. Aaron Neil in Big Finish: Diary of River Song: Series 1: The Boundless Sea)
• Sapan (6 episodes, e.g. Raymond Llewellyn in The Abominable Snowmen: Episode One)
• Saphadin (3 episodes, e.g. Roger Avon in The Crusade: The Lion)
• Sapling Vale (4 episodes, e.g. Yasmin Bannerman in Big Finish: Tales From New Earth: Escape From New New York)
• Sara (2 episodes, e.g. Kate Terence in Big Finish: Kingdom of Silver)
• Saracen Warrior (18 episodes, e.g. Edward Haroutunian in The Crusade: The Lion)
• Sarah (Aisling Bea in Eve Of The Daleks)
• Sarah (Diveen Henry in Big Finish: The Behemoth)
• Sarah (Natalie Jones in Father's Day)
• Sarah (3 episodes, e.g. Candace Brown in Torchwood: Escape to L.A.)
• Sarah Dean / Speravore Queen (4 episodes, e.g. Jessie Buckley in Big Finish: Diary of River Song: Series 2: The Unknown)
• Sarah Ellison (4 episodes, e.g. Laura Aikman in )
• Sarana Teel (Josette Simon in Big Finish: Classic Doctors, New Monsters (Volume One): The Sontaran Ordeal)
• Sararti (Jennifer Higham in Big Finish: Immortal Beloved)
• Sarla (Christine Roberts in Big Finish: Destroy the Infinite)
• Sarlon/Gorlan/Time Lord (Neil Edmond in Big Finish: The Two Masters)
• Sarn (Karen Clegg in Time and the Rani: Part One)
• Sarra Vanser/Female Drachee (Nicola Sian in Big Finish: The Brood of Erys)
• Sartia (2 episodes, e.g. Joannah Tincey in Big Finish: The Skin Of The Sleek)
• Sash (4 episodes, e.g. Madeline Duggan in Big Finish: The Further Adventures of Lucie Miller: The Dalek Trap)
• Sasha Dialfa (Daisy Ashford in Big Finish: The Butcher of Brisbane)
• Satellite voice (4 episodes, e.g. Barnaby Edwards in Big Finish: UNIT: Encounters: The Dalek Transaction)
• Sath / Mother (4 episodes, e.g. Lucy Goldie in Big Finish: Missy - Series One: A Spoonful of Mayhem)
• Sauvix (4 episodes, e.g. Christopher Farries in Warriors of the Deep: Part One)
• Savage (16 episodes, e.g. John Dillon in The Savages: Episode 3)
• Savage Child (9 episodes, e.g. Robert Pitt in The Savages: Episode 2)
• Savage, Becka (Siobhan Finneran in The Witchfinders)
• Savant (10 episodes, e.g. David Cole in Meglos: Part Two)
• Savoy Chef (Auguste) (Mike Wendell in The Power Of Three)
• Sax (Mark O'Connor in Voyage of the Damned)
• Saxon Hunter (Michael Guest in The Time Meddler: The Watcher)
• Sayer, George (Richard Augustine in Torchwood: Dead of Night)
• Sayf Udeen/Valentin (Chris Porte in Big Finish: Crime of the Century)
• Scandrius (Tim Sutton in Big Finish: Time In Office)
• Scandroids (David Dobson in Big Finish: ID / Urgent Calls: I.D.)
• Scarecrow (11 episodes, e.g. William Hazell in Stageshows: Doctor Who Live)
• Scared Man (Gary Milner in The Stolen Earth)
• Scared Man's Son (Simon) (Ethan Smith in The Stolen Earth)
• Scared Man's Wife (Laura) (Jennifer Faubel in The Stolen Earth)
• Scared Woman (Shobu Kapoor in Journey's End)
• Scaroth (2 episodes, e.g. Richard Sheekey in City of Death: Part One)
• Scarp / Kerrif (4 episodes, e.g. Phil Dunster in )
• Schandel (3 episodes, e.g. Joseph Kloska in Big Finish: Casualties of War: Pretty Lies)
• School Boy (35 episodes, e.g. Elliot Blackler in Human Nature)
• School Child (Morgan Overton in Vincent and the Doctor)
• School Child (18 episodes, e.g. Lewys Watkins in The Day of The Doctor)
• School Child (Andrew Byrne in Vincent and the Doctor)
• School Children (Coal Hill School) (46 episodes, e.g. Carole Clarke in An Unearthly Child: Pilot)
• School Secretary (Michelle Morris in Into the Dalek)
• Schoolboy (18 episodes, e.g. David Cole in Mawdryn Undead: Part One)
• Schoolmaster (5 episodes, e.g. Mark Allington in Mawdryn Undead: Part One)
• Schultz (2 episodes, e.g. Alan White in The Tenth Planet: Episode 1)
• Scibus (4 episodes, e.g. Stuart Blake in Warriors of the Deep: Part One)
• Science Minister (Simon Fisher-Becker in Big Finish: Gallifrey V: Emancipation)
• Science Minister Kavil (Simon Fisher-Becker in Big Finish: Gallifrey V: Evolution)
• Science Ministor Kavil (Simon Fisher-Becker in Big Finish: Gallifrey V: Arbitration)
• Sciencetech Vi Kruger (4 episodes, e.g. Jo Castleton in Big Finish: Dark Eyes: 2: The Traitor)
• Scientist (2 episodes, e.g. Craig Walkley in The Power Of Three)
• Scientist (3 episodes, e.g. Mike Britton in The Moonbase: Episode 3)
• Scientist (2 episodes, e.g. Vernon Dobtcheff in The War Games: Episode Four)
• Scientist (Colony Hospital) (Paul Phillips in The Macra Terror: Episode 2)
• Scientist (Irongron) (19 episodes, e.g. Roger Marston in The Time Warrior: Part One)
• Scientist (Kalid) (24 episodes, e.g. Richard Orme in Genesis of the Daleks: Part Two)
• Scientist (Two Doctors) (2 episodes, e.g. Fernand Monsat in The Two Doctors: Part One)
• Scientist Ral (4 episodes, e.g. David Bickerstaff in Big Finish: Innocence)
• Scientist Shan (4 episodes, e.g. Katarina Olsson in Big Finish: Innocence)
• Scooti Manista (MyAnna Buring in The Impossible Planet)
• Scorby (6 episodes, e.g. John Challis in The Seeds of Doom: Part One)
• Scorchies (2 episodes, e.g. Katy Manning in Big Finish: The Scorchies)
• Scott (Bruce Wightman in The Daleks' Master Plan: Volcano)
• Scott (4 episodes, e.g. James Warwick in Earthshock: Part One)
• Scott (Nicholas Pegg in Big Finish: Beyond the Sun)
• Scott (4 episodes, e.g. Justin Davies in Big Finish: God Among Us - Part 1: Future Pain)
• Scott / Catatonic Man (Barnaby Edwards in Big Finish: Minuet in Hell)
• Scott Christie (2 episodes, e.g. Scott Andrews in Big Finish: The Coup)
• Scott Delaney (Damian Lynch in Big Finish: Damaged Goods)
• Scourge Leader (Peter Trapani in Big Finish: The Shadow of the Scourge)
• Scragbite (Stephen Mansfield in Big Finish: Weapon of Choice)
• Scratch (Robert Curtis in The Husbands of River Song)
• Scraya / Pips (2 episodes, e.g. Amy Downham in )
• Screaming lady (Natalie Cuzner in Smith and Jones)
• Screaming Woman (3 episodes, e.g. Mandie Garrigan in The Crimson Horror)
• Script Editor (Matt Fitton in Big Finish: Casualties of War: The Enigma Dimension)
• Scriven, Mr (Tony Boncza in The Sarah Jane Adventures: The Eternity Trap: Episode Two)
• Scrivener (Philip Bretherton in Big Finish: Recorded Time)
• Scrub (3 episodes, e.g. Frankie Ward in The Power Of Three)
• Sculptor (Ken Hanniwell in The Green Death: Episode Three)
• Sculptor / Guard (Robert Shearman in Big Finish: The Holy Terror)
• Sea Base Personnel (15 episodes, e.g. Ling Tai in Warriors of the Deep: Part One)
• Sea Devil (45 episodes, e.g. Pat Gorman in The Sea Devils: Episode One)
• Sea Devil (Chief) (Craige Els in Legend Of The Sea Devils)
• Sea Devils (4 episodes, e.g. Nicholas Briggs in Big Finish: UNIT: Assembled: Call to Arms)
• Seaman (10 episodes, e.g. Pat Gorman in The Highlanders: Episode 2)
• Sean (Babatunde Aleshe in The Lodger)
• Sean (3 episodes, e.g. P G Stephens in The Underwater Menace: Episode 2)
• Sean (James Hayward in Big Finish: Power Play)
• Sean Casey (4 episodes, e.g. Andrew Knott in Big Finish: Dark Eyes: 2: The Traitor)
• Sean Flannigan (5 episodes, e.g. James Mellor in The Wheel In Space: Episode 2)
• Seb (3 episodes, e.g. Chris Addison in The Caretaker)
• Seb Andrews (John Banks in Big Finish: Lucie Miller)
• Sebastian Duke of Cardenas (Jonathan Firth in Big Finish: Kingdom Of Lies)
• Sebastian Grayle (Stephen Perrin in Big Finish: Seasons of Fear)
• Sebastian Vaughan (Hugh Skinner in Big Finish: The Vigil)
• Sebastian/Gorlan (James Garnon in Big Finish: The Two Masters)
• Sebastien/Major Disanto (4 episodes, e.g. Jot Davies in Big Finish: UNIT: Shutdown: Power Cell)
• Secker (Stephen Jenn in Nightmare of Eden: Part One)
• Second Assistant (Christopher Denham in The Savages: Episode 2)
• Second Crew Member (Christopher Whittingham in Earthshock: Part Two)
• Second Elder (7 episodes, e.g. Bartlett Mullins in The Sensorites: Hidden Danger)
• Second Guard (Martin Weedon in The Trial of a Time Lord (Terror of the Vervoids): Part Ten)
• Second Human (Giles Phibbs in The Sensorites: A Desperate Venture)
• Second Mate (3 episodes, e.g. Ryan Forde Iosco in )
• Second Ogron (2 episodes, e.g. Michael Kilgarriff in Frontier In Space: Episode Five)
• Second Policeman (Malcolm Rogers in The Daleks' Master Plan: The Feast of Steven)
• Second Receptionist (Guy Groen in Arc of Infinity: Part Four)
• Second Scientist (Joe Greig in The Sensorites: A Race Against Death)
• Second Time Lord (Trevor Martin in The War Games: Episode Ten)
• Second Trooper (Mark Straker in Earthshock: Part One)
• Second Vervoid (3 episodes, e.g. Bob Appleby in The Trial of a Time Lord (Terror of the Vervoids): Part Eleven)
• Second Vizier (4 episodes, e.g. Raj Ghatak in )
• Secretary (Rungano Nyoni in The Sarah Jane Adventures: Invasion of the Bane)
• Secretary (Keith Ashley in The Seeds of Doom: Part Five)
• Secretary (Kirsty-Ann Green in Boom Town)
• Secretary (2 episodes, e.g. Norton Clarke in The Massacre: Priest of Death)
• Secretary (3 episodes, e.g. Karol Hagar in Frontier In Space: Episode One)
• Secretary (2 episodes, e.g. Gloria Walker in The Claws of Axos: Episode One)
• Secretary (Sheila Knight in The Tenth Planet: Episode 1)
• Secretary (Madeleine) (5 episodes, e.g. Valerie Stanton in The Space Pirates: Episode Two)
• Secretary (Pilot) (Linda Reynolds in The Macra Terror: Episode 2)
• Secretary / Ground Control (4 episodes, e.g. Tracy Wiles in Big Finish: Ravenous 1: Their Finest Hour)
• Secretary 2 / Landlord / Borstal Boy / Driver (James Joyce in Big Finish: Subterfuge)
• Secretary General (Togo Igawa in The Pyramid At The End Of The World)
• Secretary General of the UN (Jillie Meers in Doctor Who (Miscellaneous): The Paradise Of Death: Episode Two)
• Secretary to Grover Voice (Peter Miles in Invasion of the Dinosaurs: Part Four)
• Section Leader Fenn (4 episodes, e.g. Daniel Hogarth in Big Finish: Innocence)
• Section Leader Shaw (4 episodes, e.g. Caroline John in Inferno: Episode 4)
• Secundo (Duncan Wisbey in Big Finish: The Goddess Quandary)
• Security (Andrew Dickens in Big Finish: Return of the Krotons)
• Security (7 episodes, e.g. Simon Devay in The Power Of Three)
• Security Check Guard (3 episodes, e.g. Darren Swain in Time Heist)
• Security chief (Glenn Taranto in Torchwood: Rendition)
• Security Chief (6 episodes, e.g. James Bree in The War Games: Episode Five)
• Security Chief (Ian Hilditch in Planet of the Dead)
• Security Guard (4 episodes, e.g. Derrick Slater in The Seeds of Death: Episode Four)
• Security Guard (4 episodes, e.g. Geoffrey Witherick in Image of the Fendahl: Part One)
• Security Guard (3 episodes, e.g. Carlisle Antonio in The Sontaran Stratagem)
• Security Guard (Ian Hilditch in Bad Wolf)
• Security Guard (Christopher Hurst in Logopolis: Part Four)
• Security Guard (3 episodes, e.g. Mike Skinner in The Time of Angels)
• Security Guard (David Darlington in Big Finish: Flip-Flop)
• Security Guard (Justin Walters in Smith and Jones)
• Security Guard (4 episodes, e.g. Marcus Elliott in Planet of the Dead)
• Security Guard (2 episodes, e.g. Harry Fielder in Castrovalva: Part One)
• Security Guard (2 episodes, e.g. Christopher Driscoll in The Idiot's Lantern)
• Security Guard (4 episodes, e.g. Timothy Blore in Big Finish: God Among Us - Part 3: A Mother's Son)
• Security Guard (Gareth Jones in Torchwood: Fragments)
• Security Guard (2 episodes, e.g. Brian John in Doctor Who And The Silurians: Episode 1)
• Security Guard (4 episodes, e.g. Keith Guest in Logopolis: Part Four)
• Security Guard (Sam Callis in Bad Wolf)
• Security Guard (7 episodes, e.g. Barry Summerford in The Hand Of Fear: Part Two)
• Security Guard (Ian Hilditch in Bad Wolf)
• Security Guard (Martyn Read in Silver Nemesis: Part One)
• Security Guard (Global Chemicals) (6 episodes, e.g. Leslie Bates in The Green Death: Episode One)
• Security Guard (Shop) (Alistair Sanderson in Closing Time)
• Security Guard (SJA, S5E2) (Anwar Lynch in The Sarah Jane Adventures: The Curse of Clyde Langer: Episode One)
• Security Guard (TW, S1E1) (Mark Heal in Torchwood: Everything Changes)
• Security Guard Brabbeko (Paul Panting in Big Finish: Revenge of the Swarm)
• Security Guard Richard (Connor Calland in Resolution)
• Security Man (5 episodes, e.g. John Cannon in Time-Flight: Part One)
• Security man (Dee Jay Jackson in The TV Movie)
• Security Man (Derek Van Weenan in Silver Nemesis: Part One)
• Security Man/Warrior (John Dorney in Big Finish: The Final Phase)
• Sedan Carrier (8 episodes, e.g. George Gregney in The Time Monster: Episode Five)
• Seedle (4 episodes, e.g. Ron Pember in Doctor Who (Miscellaneous): Slipback: The Final Episode)
• Seedleson (ichael Smiley in Big Finish: Creatures of Beauty)
• Seeley, Sam (3 episodes, e.g. Neil Wilson in Spearhead From Space: Episode 3)
• Seesay (Darron Meyer in Spyfall: Part One)
• Seksa (Hayley Atwell in Big Finish: The Whispering Forest)
• Selachian Leader (Chris Porter in Big Finish: The Architects of History)
• Selene (4 episodes, e.g. Louise Kempton in Big Finish: Blood on Santa's Claw)
• Selerat (Nicholas Pegg in Big Finish: Robophobia)
• Selestru (6 episodes, e.g. William Gaunt in Big Finish: The Exterminators)
• Self defence lad (15 episodes, e.g. Dominic Martinez in Survival: Part One)
• Selris (4 episodes, e.g. James Copeland in The Krotons: Episode One)
• Selta (Laura Solon in Big Finish: Orbis)
• Senator Alcott (Tommy Duggan in The Mind of Evil: Episode Two)
• Senator Hame (4 episodes, e.g. Anna Hope in Big Finish: Tales From New Earth: Escape From New New York)
• Senator Waldo Pickering (Morgan Deare in Big Finish: Minuet in Hell)
• Senex (3 episodes, e.g. Walter Fitzgerald in The Dominators: Episode 2)
• Senior Guard (2 episodes, e.g. Andrew Carr in Day of the Daleks: Episode Four)
• Senior guard (Rocky McMurray in Torchwood: The New World)
• Senior male anchor (Rick Chambers in Torchwood: The New World)
• Senior Nurse (Yasmin Wilde in Torchwood: From Out of the Rain)
• Senior Prison Officer Green (4 episodes, e.g. Eric Mason in The Mind of Evil: Episode One)
• Senior professor (Ron Butler in Torchwood: The New World)
• Senior Prosecutor Uglosi (Michael J Shannon in Big Finish: Nevermore)
• Sensorite (8 episodes, e.g. Anthony Rogers in The Sensorites: Strangers in Space)
• Senstarg (Dan Starkey in The Vanquishers: Flux: Chapter Six)
• Senta (4 episodes, e.g. Norman Henry in The Savages: Episode 1)
• Sentia (Caroline Munro in Big Finish: Omega)
• Sentreal (2 episodes, e.g. Sam Mansary in Mission to the Unknown)
• Sentry (Duncan Brown in Silver Nemesis: Part One)
• Sentry (2 episodes, e.g. Tom Bowman in The Highlanders: Episode 2)
• Sentry (3 episodes, e.g. Valentino Musetti in Marco Polo: The Wall of Lies)
• Sentry (Steve Brunswick in The Time Warrior: Part Three)
• Sentry (Irongron) (2 episodes, e.g. Andrew Abrahams in The Time Warrior: Part Two)
• Seo (Maitland Chandler in Big Finish: Singularity)
• Septal (Steve Hansell in Big Finish: Brotherhood of the Daleks)
• Septimus (Simon Kingsley in Big Finish: The Adventure of the Diogenes Damsel)
• Septus (Joe Shire in Big Finish: Tartarus)
• Sepulchre (Rupert Vansittart in Big Finish: Dead London)
• Sera/Spokesperson (3 episodes, e.g. Julia Hills in Big Finish: Casualties of War: Pretty Lies)
• Seratrix (3 episodes, e.g. Alex Wyndham in Big Finish: Only the Monstrous: The Innocent)
• Sereant Wood (Rob Dixon in Big Finish: No Man's Land)
• Serena (5 episodes, e.g. Janie Booth in Torchwood: Dead Man Walking)
• Serena Paget (Kirsty Besterman in Big Finish: We Are The Daleks)
• Serf (2 episodes, e.g. Mark Aiken in The Sarah Jane Adventures: The Man Who Never Was: Episode One)
• Sergeant (Ashley McGuire in Big Finish: The Sixth Doctor: The Last Adventure: The Red House)
• Sergeant (Michael Ballard in Resolution)
• Sergeant (2 episodes, e.g. John Boyd-Brent in The War Machines: Episode 3)
• Sergeant (Robert Hunter in The Reign Of Terror: A Land of Fear)
• Sergeant (Stewart Alexander in Big Finish: Renaissance of the Daleks)
• Sergeant (Ryan McCluskey in Dreamland)
• Sergeant (Ray Float in The Five Doctors)
• Sergeant (2 episodes, e.g. Phillip Kirk in Doomsday)
• Sergeant (Tommy Campbell in Day of the Moon)
• Sergeant (Clifford Cox in Spearhead From Space: Episode 3)
• Sergeant (4 episodes, e.g. Peter Welch in The Highlanders: Episode 1)
• Sergeant (Caolan Byrne in Ascension of the Cybermen)
• Sergeant Andy (Tom Price in Big Finish: More Than This)
• Sergeant Andy Davidson (17 episodes, e.g. Tom Price in Big Finish: Ghost Mission)
• Sergeant Bradshaw (Duncan Wisbey in Big Finish: The Crimes of Thomas Brewster)
• Sergeant Brundle / Simon / Fisherman / Jasper (4 episodes, e.g. Roger May in Big Finish: UNIT: Revisitations: Hosts of the Wirrn 1)
• Sergeant Calder (2 episodes, e.g. Philip McGough in Resurrection of the Daleks: Part One)
• Sergeant Duffy (Dave Carter in Invasion of the Dinosaurs: Part One)
• Sergeant French (Joseph Lidster in Big Finish: The Coup)
• Sergeant Frith (Adam Woodroffe in Big Finish: Project: Lazarus)
• Sergeant Gazelle (Lisa Bowerman in Big Finish: Zagreus)
• Sergeant Grout / Spring-Heeled Jack (3 episodes, e.g. Joe Sims in Big Finish: The Paternoster Gang: Heritage 2: Dining with Death)
• Sergeant Hart (2 episodes, e.g. Richard Steele in Doctor Who And The Silurians: Episode 4)
• Sergeant Henderson (2 episodes, e.g. Ray Barron in The Seeds of Doom: Part Five)
• Sergeant Hunter (4 episodes, e.g. Ben Crowe in Big Finish: Charlotte Pollard: Series 2: Embankment Station)
• Sergeant James Atherton (Sam Clemens in Big Finish: Blue Forgotten Planet)
• Sergeant Janet Wharry (Fiona Hampton in )
• Sergeant Jarrod (Philip Dinsdale in Big Finish: Project: Destiny)
• Sergeant Kyle (2 episodes, e.g. David McKail in The Talons of Weng-Chiang: Part One)
• Sergeant Lange Ragamuffin (4 episodes, e.g. Alex Lowe in Big Finish: Jago & Litefoot Series 01: The Bloodless Soldier)
• Sergeant Leonid Kurakin/Scientist (Stuart Denman in Big Finish: 1963: The Space Race)
• Sergeant Markham (Ivor Salter in Black Orchid: Part Two)
• Sergeant Mezz/Trooper Nold (Alex Lowe in Big Finish: Heroes of Sontar)
• Sergeant Pete Wilson (Bradley Gardner in Big Finish: Dominion)
• Sergeant Peters (2 episodes, e.g. Norman Hartley in The Invasion: Episode Seven)
• Sergeant Price (Morgan Hopkins in World War Three)
• Sergeant Quick (20 episodes, e.g. Conrad Asquith in Big Finish: Jago & Litefoot Series 01: The Bloodless Soldier)
• Sergeant Ramesh Sunder (Asif Khan in Spyfall: Part One)
• Sergeant Rilke (Russell Floyd in Big Finish: City of Spires)
• Sergeant Rugg (Campbell Singer in The Celestial Toymaker: The Dancing Floor)
• Sergeant Tahira Khan (Bindya Solanki in Big Finish: Enemy of the Daleks)
• Sergeant to Benik (Andrew Staines in The Enemy of the World: Episode 4)
• Sergeant Walters (6 episodes, e.g. James Thornhill in The Invasion: Episode Two)
• Sergeant Warren Calder (4 episodes, e.g. Andrew French in Big Finish: UNIT: Incursions: This Sleep of Death)
• Sergeant West/Shurik Barkov (4 episodes, e.g. Dominic Rowan in Big Finish: Counter-Measures: Series 4: New Horizons)
• Sergeant Willis (2 episodes, e.g. Brian Forster in The War Games: Episode One)
• Sergeant Zbrigniev (Robert Jezek in Battlefield: Part One)
• Sergeant Zreeg / Councillor / UNIT Lieutenant (2 episodes, e.g. Chris Walker-Thomson in Big Finish: The Comic Strip Adaptations Volume 01: Doctor Who and the Iron Legion)
• Sergic/Snubby (6 episodes, e.g. Jeremy James in Big Finish: The Exterminators)
• Sergio (Jim Sweeney in Doctor Who (Miscellaneous): The Ghosts of N Space: Episode Three)
• Seron (2 episodes, e.g. John Woodnutt in The Keeper of Traken: Part One)
• Seru (Rachel Bavidge in Big Finish: The Isos Network)
• Servant (Varinder Kumar Verma in The Unicorn and the Wasp)
• Servant (4 episodes, e.g. Dominic Kynaston in Tooth and Claw)
• Servant (Jonathan Keeble in Doctor Who (Miscellaneous): The Ghosts of N Space: Episode Three)
• Servant (Tim Plester in A Christmas Carol)
• Servant (4 episodes, e.g. Reginald Jessup in The Massacre: War of God)
• Servant (Alphan) (24 episodes, e.g. James Dublin in The Trial of a Time Lord (Mindwarp): Part Eight)
• Servant (Boy) (2 episodes, e.g. Stephen Ubels in The Myth Makers: Temple of Secrets)
• Servant (Girl) (2 episodes, e.g. Michelle Barry in The Myth Makers: Temple of Secrets)
• Servant (Mindwarp) (8 episodes, e.g. Mandine Reina in The Trial of a Time Lord (Mindwarp): Part Eight)
• Servant at Way Inn (Ying Wiu in Marco Polo: The Wall of Lies)
• Serving Girl (8 episodes, e.g. Virginia Mull in The Time Monster: Episode Five)
• Serving Man (Jimmy Mack in The End of Time: Part One)
• Serving Wench (2 episodes, e.g. Marianne Lawrence in Warriors' Gate: Part Three)
• Serving Woman (Lacey Bond in The End of Time: Part One)
• Servo (Phill Jupitus in Big Finish: The Cannibalists)
• Servo Robot (Freddie Foote in The Wheel In Space: Episode 1)
• Seskwa (Russell Bentley in Big Finish: The Well-Mannered War)
• Session Singer (Keith Murrell in Remembrance of the Daleks: Part One)
• Seth (10 episodes, e.g. Simon Gipps-Kent in The Horns of Nimon: Part One)
• Seth Harper (2 episodes, e.g. Shane Rimmer in The Gunfighters: A Holiday for the Doctor)
• Seth Heyer (4 episodes, e.g. Jonathan Christie in Big Finish: UNIT: Revisitations: Hosts of the Wirrn 1)
• Seth the Sensational/Tour Guide (8 episodes, e.g. Stephen Fewell in Big Finish: Wildthyme Reloaded: Comeback of the Scorchies)
• Sevateem (31 episodes, e.g. David Nichol in The Face of Evil: Part One)
• Sevcheria (4 episodes, e.g. Derek Sydney in The Romans: The Slave Traders)
• Severine (4 episodes, e.g. Sophie Shad in )
• Sevrin (5 episodes, e.g. Stephen Yardley in Genesis of the Daleks: Part Two)
• Sexy Peasant (2 episodes, e.g. Chantelle Hack Victoria in Robot Of Sherwood)
• Sezom (John Bailey in The Horns of Nimon: Part Four)
• Sezon (2 episodes, e.g. Dickon Ashworth in Timelash: Part One)
• Sgt Andy (Tom Price in Big Finish: The Death Of Captain Jack)
• Sgt Andy Davidson (Tom Price in Big Finish: Goodbye Piccadilly)
• Sgt Barclay (Tom Price in Big Finish: Nightshade)
• Sgt Dennison (Glenn Doherty in Planet of the Dead)
• Sgt Ian Jenner (James Layton in Planet of the Dead)
• Sgt Mike Smith (4 episodes, e.g. Dursley McLinden in Remembrance of the Daleks: Part Two)
• Sgt. Andy Davidson (8 episodes, e.g. Tom Price in Big Finish: Aliens Among Us - Part 2: Love Rat)
• Sgt. Johnson (Ross O'Hennessy in Torchwood: Day One)
• Sgt. Leigh (4 episodes, e.g. Marcus Hutton in The Curse of Fenric: Part One)
• Sgt. Major Burns (2 episodes, e.g. Esmond Webb in The War Games: Episode One)
• Sgt. Osgood (3 episodes, e.g. Alec Linstead in The Dæmons: Episode Three)
• Sgt. Prozorov (3 episodes, e.g. Peter Czajkowski in The Curse of Fenric: Part One)
• Sgt. Thompson (Bill Hutchinson in The War Games: Episode Four)
• Shada Prisoner (24 episodes, e.g. Ann Lee in Shada: Part Five)
• Shada Voice (Stuart Crossman in Doctor Who (Miscellaneous): Shada (Online): Part Five)
• Shadovar (3 episodes, e.g. David Warner in Big Finish: Infernal Devices: Legion of the Lost)
• Shadow Architect (2 episodes, e.g. Kelly Hunter in The Stolen Earth)
• Shadows (John Banks in Big Finish: The Dark Planet)
• Shadrak (Rebecca Callard in Big Finish: Classic Doctors, New Monsters (Volume One): Harvest of the Sycorax)
• Shafira (Mandi Symonds in Big Finish: Revenge of the Swarm)
• Shafranek (4 episodes, e.g. Jamie Newall in Big Finish: Ravenous 2: Seizure)
• Shah, Miss (2 episodes, e.g. Pooja Shah in Class: For Tonight We Might Die)
• Shakri (Steven Berkoff in The Power Of Three)
• Shallo (Dan Starkey in The Vanquishers: Flux: Chapter Six)
• Shamur (Vernon Dobtcheff in Big Finish: The Children of Seth)
• Shan/Computer/Earpiece Voice (Katarina Olsson in Big Finish: Davros)
• Shana (4 episodes, e.g. Vineeta Rishi in Big Finish: UNIT: Revisitations: Hosts of the Wirrn 1)
• Shandar (Mark Frost in Big Finish: Requiem for the Rocket Men)
• Shankel (Jack Myers in Big Finish: The Ultimate Evil)
• Shanks (Trevor Cooper in Big Finish: The Haunting of Thomas Brewster)
• Shannon (Niamh McGrady in Big Finish: Interstitial)
• Shansheeth (8 episodes, e.g. Paul Kasey in The Sarah Jane Adventures: Death of the Doctor: Episode Two)
• Shansheeth Blue (2 episodes, e.g. David Bradley in The Sarah Jane Adventures: Death of the Doctor: Episode Two)
• Shapiro, Allen (3 episodes, e.g. John De Lancie in Torchwood: End of the Road)
• Shapp (5 episodes, e.g. Davyd Harries in The Armageddon Factor: Part One)
• Sharaz Jek (4 episodes, e.g. Christopher Gable in The Caves of Androzani: Part One)
• Shardovan (2 episodes, e.g. Derek Waring in Castrovalva: Part Three)
• Shardow/Attendant (William Whymper in Big Finish: The Nightmare Fair)
• Shardul Khan (Vincent Ebrahim in Big Finish: The Emerald Tiger)
• Shari (Lizzie Roper in Big Finish: We Are The Daleks)
• Sharlan (2 episodes, e.g. Tracy Wiles in Big Finish: The First Doctor Adventures Volume 02: The Invention of Death)
• Sharma (Laura Riseborough in Big Finish: Dark Eyes: 3: The Reviled)
• Sharon (2 episodes, e.g. Rhianne Starbuck in Big Finish: The Comic Strip Adaptations Volume 01: Doctor Who and the Iron Legion)
• Shaun Brett (Christopher Scott in Big Finish: The Land of the Dead)
• Shaun Jones (Gareth Potter in Torchwood: Random Shoes)
• Shaun Temple (2 episodes, e.g. Karl Collins in The End of Time: Part One)
• Shaw, Liz (33 episodes, e.g. Caroline John in Spearhead From Space: Episode 1)
• Shaw, Rev (Alex Frost in Village of the Angels: Flux: Chapter Four)
• Shawnie (Constance Wu in Torchwood: End of the Road)
• Shayd (Mark Donavan in Big Finish: No Place Like Home)
• Shayla (Susan Penhaligon in Big Finish: Primeval)
• Shayna / Tasha (Natasha Karp in Big Finish: Emissary of the Daleks)
• Sheard (2 episodes, e.g. Brian McDermott in Time-Flight: Part One)
• Shedgerton (David Graham in Big Finish: The Defectors)
• Sheen (Robert Curbishley in Big Finish: The Secret of Cassandra)
• Sheena (4 episodes, e.g. Olivia Vinall in Big Finish: The Time War: The Starship of Theseus)
• Sheer Jawn (Dan Starkey in Big Finish: Wirrn Isle)
• Sheila (Luan Peters in Frontier In Space: Episode Three)
• Sheila Page / Nightstalker (4 episodes, e.g. Lizzie Stables in Big Finish: Diary of River Song: Series 6: An Unearthly Woman)
• Shekkina (3 episodes, e.g. Eve Karpf in Big Finish: The Story So Far Volume Two: Every Dark Thought)
• Sheldukher (Daniel Brocklebank in Big Finish: The Highest Science)
• Shelley (8 episodes, e.g. Lizzie Hopley in Big Finish: Wildthyme Reloaded: Comeback of the Scorchies)
• Shelterer (36 episodes, e.g. Pearl Hawkes in The Enemy of the World: Episode 4)
• Sheprah (3 episodes, e.g. Brian Grellis in Revenge of the Cybermen: Part Two)
• Shepstay (Nadine Marshall in Big Finish: Earth Aid)
• Shepton Rothwell (Philip Bird in Big Finish: Missing Persons: Big Dig)
• Sheriff (Ben Miller in Robot Of Sherwood)
• Sheriff Double (Jared Williams in Robot Of Sherwood)
• Sheriff Horse Riding Double (Matt Provost in Robot Of Sherwood)
• Sheriff’s Human Guard (4 episodes, e.g. Dale Henry in Robot Of Sherwood)
• Sherilyn Harper (Jacqueline Pearce in Big Finish: The Fearmonger)
• Sherla/Baden/Tox (Joanna Christie in Big Finish: Army of Death)
• Sherlock Holmes (Nicholas Briggs in Big Finish: All-Consuming Fire)
• Sherringford Holmes (Hugh Fraser in Big Finish: All-Consuming Fire)
• Shewstone/Bosun (Ian Brooker in Big Finish: A Storm of Angels)
• Sheyrah (Zohra Sehgal in The Crusade: The Knight of Jaffa)
• Shill/Computer (Beth Chalmers in Big Finish: Prisoner of the Sun)
• Ship (12 episodes, e.g. Shirley Dixon in Shada: Part One)
• Ship (2 episodes, e.g. Kate Fleetwood in The Sarah Jane Adventures: The Mad Woman in the Attic: Episode One)
• Ship's Crew (24 episodes, e.g. Mohamed Shamsi in Carnival Of Monsters: Episode Four)
• Shira (Caroline Langrishe in Big Finish: The Burning Prince)
• Shireen (Mandeep Dhillon in Knock Knock)
• Shirna (4 episodes, e.g. Cheryl Hall in Carnival Of Monsters: Episode One)
• Shockeye (3 episodes, e.g. John Stratton in The Two Doctors: Part One)
• Shoggoth / Wilbur / Armitage (David Menkin in )
• Shokhra (Sam Peter Jackson in Big Finish: Unregenerate!)
• Shola (2 episodes, e.g. Emma Campbell-Jones in Big Finish: The Paradox Planet)
• Sholakh (4 episodes, e.g. Robert Keegan in The Ribos Operation: Part One)
• Shom/Hogan/Ogron 6 (Phil Mulryne  in Big Finish: The Romance of Crime)
• Shona (Seroca Davis in Closing Time)
• Shona (Last Christmas) (Faye Marsay in Last Christmas)
• Shonnath (4 episodes, e.g. Wendy Craig in Big Finish: The Time War - Series 3: State of Bliss)
• Shoon-Wei (4 episodes, e.g. Arina II in Big Finish: Jenny - The Doctor's Daughter: Stolen Goods)
• Shop Assistant (Pethrow Gooden in Torchwood: Something Borrowed)
• Shop Staff (Winston Pike in The Sound of Drums)
• Shop Worker (Johnson Yakoob in Love & Monsters)
• Shopkeeper (Juliet Warner in Big Finish: The Greatest Shop in the Galaxy)
• Shopkeeper (Nicholas Briggs in Big Finish: Death in Blackpool)
• Shopkeeper (3 episodes, e.g. Cyril Nri in The Sarah Jane Adventures: Lost in Time: Episode One)
• Shopkeeper (2 episodes, e.g. John Barrard in The Reign Of Terror: A Change of Identity)
• Shopkeeper 2 (Jane Slavin in Big Finish: The Trouble with Drax)
• Shopper (4 episodes, e.g. Ri Richards in Big Finish: God Among Us - Part 1: Future Pain)
• Shopper (115 episodes, e.g. Greg James in Closing Time)
• Short (Timothy Craven in Robot: Part Two)
• Shorter Monk (2 episodes, e.g. Simon Ashley in A Good Man Goes to War)
• Shorthand Double (Aled Blake in Blink)
• Shou Yuing (4 episodes, e.g. Ling Tai in Battlefield: Part One)
• Shouting Man (Graeme Henderson in Stageshows: Doctor Who Live)
• Shown (Arthur Hughes in Big Finish: The Genesis Chamber)
• Shreela (3 episodes, e.g. Sakuntala Ramanee in Survival: Part One)
• Shreela / Jana / Pip / Mole / Witch / Janey (4 episodes, e.g. Becky Wright in Big Finish: Blood on Santa's Claw)
• Shreeni (Nick Brimble in Big Finish: Exotron)
• Shrieve (21 episodes, e.g. Oliver Maguire in The Ribos Operation: Part One)
• Shrinking Guardian (David Greneau in The Ark: The Steel Sky)
• Shrivenzale (8 episodes, e.g. Stuart Fell in The Ribos Operation: Part One)
• Shrouded Statues (4 episodes, e.g. Jon Davey in The Day of The Doctor)
• Shura (3 episodes, e.g. Jimmy Winston in Day of the Daleks: Episode One)
• Shuresh (Jai Rajani in The Sarah Jane Adventures: The Mad Woman in the Attic: Episode Two)
• Shvak (Helen Goldwyn in Big Finish: Bloodtide)
• Sian (Hayley J Williams in Torchwood: The Devil and Miss Carew)
• Siberian Warrior (Resolution) (Guillaume Rivaud in Resolution)
• Sibor (Sarah Dougles in Big Finish: Prisoners of Fate)
• Sibyl Vane (4 episodes, e.g. Jessye Romeo in )
• Sicura (3 episodes, e.g. Genevieve Gaunt in )
• Sida (3 episodes, e.g. Alice Haig in Big Finish: The War to End All Wars)
• Sigdor (Malcolm James in Big Finish: The Hunting Ground)
• Sigmund Freud (4 episodes, e.g. Adrian Lukis in Big Finish: Jago & Litefoot Series 06: The Skeleton Quay)
• Signals Voice (Ian Staples in The Caves of Androzani: Part One)
• Sigurd (3 episodes, e.g. Tim Munro in Terminus: Part Two)
• Sil (8 episodes, e.g. Nabil Shaban in Vengeance on Varos: Part One)
• Silas P. (Jonathan Burn in The Happiness Patrol: Part One)
• Silent (6 episodes, e.g. Harrison Lamer-Main in Closing Time)
• Silex/ Mr Stoker (John Banks in Big Finish: Subterranea)
• Silo Crook (4 episodes, e.g. Shvorne Marks in Big Finish: The Lives of Captain Jack: The Year After I Died)
• Silurian (26 episodes, e.g. Paul Barton in Doctor Who And The Silurians: Episode 5)
• Silurian (4 episodes, e.g. Jenny Phillips in Stageshows: Doctor Who Live)
• Silurian Scientist (3 episodes, e.g. Pat Gorman in Doctor Who And The Silurians: Episode 5)
• Silurian Voice (5 episodes, e.g. Peter Halliday in Doctor Who And The Silurians: Episode 4)
• Silver Crow (John Banks in Big Finish: Moonflesh)
• Silverman, Toby (2 episodes, e.g. Adam Gillen in The Sarah Jane Adventures: The Eternity Trap: Episode One)
• Silvey (Jay Neill in The Invisible Enemy: Part One)
• Simeon, Doctor (5 episodes, e.g. Richard E. Grant in The Snowmen)
• Simmons (Nigel Whitmey in Dalek)
• Simon (Rohan Nedd in The Eaters of Light)
• Simon (3 episodes, e.g. John Tillinger in The Massacre: War of God)
• Simon (3 episodes, e.g. Che Francis in Big Finish: The Story So Far Volume One: Ever After Happy)
• Simon (Jonny Dixon in Big Finish: Instant Karma)
• Simon Corbett/Reporter (Robin Pearce in Big Finish: The Crooked Man)
• Simon Devlin (4 episodes, e.g. Steve John Shepherd in Big Finish: UNIT: Extinction: Vanguard)
• Simon Murchford (Stephen Mansfield in Big Finish: The Next Life)
• Simone Simpson / Receptionist (3 episodes, e.g. Jasmin Hinds in )
• Simonsson (Michael Maloney in Big Finish: Grand Theft Cosmos)
• Simran Baidwan (2 episodes, e.g. Ronobir Lahiri in Torchwood: Rendition)
• Sinclair, Ryan (22 episodes, e.g. Tosin Cole in Arachnids In The UK)
• Singer (Penny Lister in The Talons of Weng-Chiang: Part Four)
• Singer (Yamit Mamo in Voyage of the Damned)
• Singer (Foxes in Mummy On The Orient Express)
• Singer (TW, S1E12) (Melissa Moore in Torchwood: Captain Jack Harkness)
• Singer Double (Nicole Crees in Mummy On The Orient Express)
• Sinko / Ronson / Lieutenant (2 episodes, e.g. Ian Cunningham in Big Finish: The Third Doctor Adventures Volume 03: The Conquest of Far)
• Sir Archibald Flint (James Bolam in Big Finish: The Spectre of Lanyon Moor)
• Sir Charles Summer (4 episodes, e.g. William Mervyn in The War Machines: Episode 1)
• Sir Colin Thackeray (5 episodes, e.g. Michael Barrington in The Seeds of Doom: Part One)
• Sir Davenport Finch (2 episodes, e.g. Terry Molloy in Big Finish: The Third Doctor Adventures Volume 06: Poison of the Daleks)
• Sir Donald (Stephen Greif in Big Finish: Dreamland)
• Sir Donald Marshall (3 episodes, e.g. Roger Parrott in Big Finish: Iris Wildthyme Series 3: The Iris Wildthyme Appreciation Society)
• Sir Donald Wakefield (3 episodes, e.g. Stephen Greif in Big Finish: Buried Secrets)
• Sir Edward Scott Cameron / Biggs (4 episodes, e.g. Ewan Bailey in Big Finish: Lady Christina: It Takes a Thief)
• Sir Edward Scrivener (Gethin Anthony in Big Finish: Philip Hinchcliffe Presents: The Ghosts of Gralstead)
• Sir Foxcroft / Gramoryan 1 / Priest (4 episodes, e.g. Leighton Pugh in Big Finish: Missy - Series One: A Spoonful of Mayhem)
• Sir Francis Walsingham (Ian Brooker in Big Finish: Point of Entry)
• Sir Francis White/Ritchie (Alisdair Simpson in Big Finish: 1963: The Assassination Games)
• Sir Geoffrey (2 episodes, e.g. Michael J Jackson in The King's Demons: Part One)
• Sir Geoffrey Balsam (Glynn Sweet in Big Finish: The Behemoth)
• Sir George Hutchinson (2 episodes, e.g. Denis Lill in The Awakening: Part One)
• Sir Gideon Vale/Handler (Oliver Cotton in Big Finish: 1963: The Assassination Games)
• Sir Gilles (Anthony Ainley in The King's Demons: Part One)
• Sir Hamilton Seymour (Sean Brosnan in Big Finish: The Angel of Scutari)
• Sir Hartley Harecourt (4 episodes, e.g. John Rowe in Big Finish: Jago & Litefoot Series 10: The Case of the Missing Gasogene)
• Sir Henry Irving (4 episodes, e.g. Edward de Souza in Big Finish: Jago & Litefoot Series 11: Jago and Son)
• Sir Humphrey Eagleton / Charlie Lucas (Stephen Critchlow in Big Finish: Jago & Litefoot Forever)
• Sir Isaac Newton (David Warner in Big Finish: Circular Time: Summer)
• Sir James Gregson (Hugh Morton in The Seeds of Death: Episode Five)
• Sir James Royston (4 episodes, e.g. David John in Big Finish: Jago & Litefoot Series 12: Picture This)
• Sir James Royston/Pete Stepney (4 episodes, e.g. David John in Big Finish: Jago & Litefoot Series 12: Picture This)
• Sir James Tyrell (Chris Neill in Big Finish: The Kingmaker)
• Sir Jasper Eagleton / Old Smallpiece / Jonathan Mayfly (3 episodes, e.g. Trevor Cooper in Big Finish: The Paternoster Gang: Heritage 1: The Cars That Ate London!)
• Sir Keith Gold (6 episodes, e.g. Christopher Benjamin in Inferno: Episode 1)
• Sir Keith Kordel (4 episodes, e.g. Phillip Bretherton in Big Finish: Counter-Measures: Series 4: New Horizons)
• Sir Lancelot (John Greenwood in The Mind Robber: Episode 5)
• Sir Nicholas Asquin (Ed Stoppard in Big Finish: The Beast Of Kravenos)
• Sir Nikolas Valentine (David Ryall in Big Finish: Phantasmagoria)
• Sir Percy / Terrance (Jamie Parker in Big Finish: Plight of the Pimpernel)
• Sir Peter Latcham (4 episodes, e.g. Nigel Carrington in Big Finish: UNIT: Shutdown: Power Cell)
• Sir Ralph (Trevor Cooper in Big Finish: The Doomwood Curse)
• Sir Reginald Styles (2 episodes, e.g. Wilfred Carter in Day of the Daleks: Episode One)
• Sir Robert Harney (Nigel Carrington in Big Finish: Philip Hinchcliffe Presents: The Devil's Armada)
• Sir Robert MacLeish (Derek Riddell in Tooth and Claw)
• Sir Robert Muir (2 episodes, e.g. Moray Watson in Black Orchid: Part One)
• Sir Sidney Herbert/Tzar Nicholas I (Hugh Bonneville in Big Finish: The Angel of Scutari)
• Sir Thomas de Wensley (Joseph Kloska in Big Finish: The Doctor's Tale)
• Sir Toby Kinsella (36 episodes, e.g. Hugh Ross in Big Finish: 1963: The Assassination Games)
• Sir Walter Raleigh (Mark Lockyer in Big Finish: Voyage to the New World)
• Sir William Abberton (Stephen Chance in Big Finish: Project: Destiny)
• Sir Winston Churchill (4 episodes, e.g. Ian McNeice in Big Finish: Ravenous 1: Their Finest Hour)
• Siren (Lily Cole in The Curse of the Black Spot)
• Siris (David Warner in Big Finish: The Children of Seth)
• Sisrella Tevier (Ony Uhiara in Big Finish: The Seeds of War)
• Sissy Cruciatu (2 episodes, e.g. Susie Emmett in Big Finish: The First Doctor Adventures Volume 05: For the Glory of Urth)
• Sister (40 episodes, e.g. Sue Bishop in The Brain of Morbius: Part One)
• Sister Chalice (Barbara Flynn in Big Finish: The Skull of Sobek)
• Sister Christie (Lizzie Hopley in Big Finish: The Unbound Universe: The Emporium At The End)
• Sister Frances Beckett (Richenda Carey in Big Finish: The Cloisters of Terror)
• Sister Jara (4 episodes, e.g. Adjoa Andoh in Big Finish: Tales From New Earth: Escape From New New York)
• Sister Jatt (Adjoa Andoh in New Earth)
• Sister Jolene (Posy Miller in Big Finish: Excelis Dawns)
• Sister Lamont (4 episodes, e.g. Lillias Walker in Terror of the Zygons: Part One)
• Sister Magdalene (4 episodes, e.g. Janet Henfrey in Big Finish: Diary of River Song: Series 7: Colony of Strangers)
• Sister Marianne (Charlie Langdell in Big Finish: Road Trip: Bad Habits)
• Sister Patrick (4 episodes, e.g. Aurora Burghart in Big Finish: Diary of River Song: Series 7: Colony of Strangers)
• Sister Thrift (Katarina Olsson in Big Finish: The Skull of Sobek)
• Sister Ursula (4 episodes, e.g. Jaye Griffiths in Big Finish: Diary of River Song: Series 7: Colony of Strangers)
• Sisterman Constant (Pamela Binns in Big Finish: Spare Parts)
• Sistermatic/Kiseibya/Male Patient/Male Voice (Jeremy James in Big Finish: Enemy of the Daleks)
• Sisters (6 episodes, e.g. Adele Orchard in The Fires of Pompeii)
• Sita (4 episodes, e.g. Peter Sanders in The Space Museum)
• Siward (Derek Carlyle in Big Finish: Leviathan)
• Siy Tarkov (10 episodes, e.g. Steven Elder in Big Finish: Chapter One)
• Siyanda (4 episodes, e.g. Vivienne Acheampong in Big Finish: The Sixth Doctor and Peri Volume 01: The Headless Ones)
• Skaak (Jonathan Watson in War of The Sontarans: Flux: Chapter Two)
• Skaarg/Jarga/Hussa (James George in Big Finish: Mission to Magnus)
• Skagra (13 episodes, e.g. Christopher Neame in Shada: Part One)
• Skaldak (Spencer Wilding in Cold War)
• Skaldak (Voice) (Nicholas Briggs in Cold War)
• Skart (4 episodes, e.g. Frank Jarvis in The Power of Kroll: Part One)
• Skaul/Freel (3 episodes, e.g. Chris Porter in Big Finish: Casualties of War: Pretty Lies)
• Skeleton (5 episodes, e.g. Richard Highgate in Asylum of the Daleks)
• Skellen / V48 / SV66 (3 episodes, e.g. Robert Whitelock in Big Finish: The Robots Volume One: The Robots of Life)
• Skerrill (Christine Brennan in Big Finish: Return of the Daleks)
• Skinhead (2 episodes, e.g. Chris Chering in Silver Nemesis: Part Two)
• Skinner, Lucy (2 episodes, e.g. Clare Thomas in The Sarah Jane Adventures: The Last Sontaran: Part One)
• Skinner, Professor Nicholas (2 episodes, e.g. Ronan Vibert in The Sarah Jane Adventures: The Last Sontaran: Part One)
• Skinsale (3 episodes, e.g. Alan Rowe in Horror of Fang Rock: Part Two)
• Skippa (2 episodes, e.g. Deli Segal in Big Finish: The Third Doctor Adventures Volume 04: The Rise of the New Humans)
• Skonnan Elder (21 episodes, e.g. David Harris in The Horns of Nimon: Part Two)
• Skonnan Guard (18 episodes, e.g. Norman Bradley in The Horns of Nimon: Part Three)
• Skovox Blitzer (Jimmy Vee in The Caretaker)
• Skredsvig (Jez Fielder in Big Finish: Dust Breeding)
• Skwoj / Ari (2 episodes, e.g. Abigail McKern in Big Finish: The Third Doctor Adventures Volume 06: Poison of the Daleks)
• Sky (10 episodes, e.g. Sinead Michael in The Sarah Jane Adventures: Sky: Episode One)
• Sky Silvestry (Lesley Sharp in Midnight)
• Skybase Guard (12 episodes, e.g. Martin Taylor in The Mutants: Episode Five)
• Slaar (6 episodes, e.g. Alan Bennion in The Seeds of Death: Episode One)
• Slade (Sam Clemens in Big Finish: Lurkers at Sunlight's Edge)
• Slade, Jarva (Callum Dixon in Kerblam!)
• Slater (James George in Big Finish: The Condemned)
• Slave (3 episodes, e.g. Carley Zampella in The Fires of Pompeii)
• Slave (Mark Wright in Big Finish: The Eye of the Scorpion)
• Slave (Skaro worker) (86 episodes, e.g. Ron Tarr in Destiny of the Daleks: Episode Three)
• Slave buyer (Edward Kelsey in The Romans: The Slave Traders)
• Slave Worker (23 episodes, e.g. Desmond Verini in Day of the Daleks: Episode Three)
• Slave/Prisoner in mine (35 episodes, e.g. Alan Wakeling in The Dalek Invasion of Earth: The Waking Ally)
• Slaygar (4 episodes, e.g. Rhys Jennings in Big Finish: Ruler Of The Universe: The City And The Clock)
• Sline (Colin Miller in Stageshows: The Curse Of The Daleks)
• Slink (4 episodes, e.g. Carol Starks in Big Finish: Graceless IV: The Bomb)
• Slitheen (10 episodes, e.g. Elizabeth Fost in Aliens of London)
• Slitheen (Korst Gogg Thek Lutiven-Day) (4 episodes, e.g. Jimmy Vee in The Sarah Jane Adventures: The Lost Boy: Part One)
• Slitheen (SJA, S4E1) (2 episodes, e.g. Paul Kasey in The Sarah Jane Adventures: The Nightmare Man: Episode One)
• Slithergee/Clarence (Daniel Hogarth in Big Finish: Flip-Flop)
• Slyde (Michael Praed in Big Finish: The Dark Flame)
• Slyther Operator (2 episodes, e.g. Nick Evans in The Dalek Invasion of Earth: The End of Tomorrow)
• Small Boy (Robert Bartlett in The Massacre: War of God)
• Smiler (2 episodes, e.g. Adam Anderson in Stageshows: Doctor Who Live)
• Smiler (soldier) (Ciaran Joyce in Torchwood: Captain Jack Harkness)
• Smith Ridley/Dar Traders/Colonel (2 episodes, e.g. Derek Carlyl in Big Finish: Spider's Shadow)
• Smith, Barbara (2 episodes, e.g. Rosanna Lavelle in The Sarah Jane Adventures: The Temptation of Sarah Jane Smith: Episode One)
• Smith, Eddie (2 episodes, e.g. Christopher Pizzey in The Sarah Jane Adventures: The Temptation of Sarah Jane Smith: Episode One)
• Smith, Lavinia (Mary Wimbush in K-9 and Company: A Girl's Best Friend)
• Smith, Luke (SJA) (50 episodes, e.g. Tommy Knight in The Stolen Earth)
• Smith, Sarah Jane (175 episodes, e.g. Elisabeth Sladen in The Time Warrior: Part One)
• Smithers (3 episodes, e.g. Reginald Barratt in Planet of Giants: Dangerous Journey)
• Smithy (Arthur Kay in The Witchfinders)
• Smithy/Mummer (Trevor Cooper in Big Finish: Castle of Fear)
• Smitty (4 episodes, e.g. Matt Steer in Big Finish: Jago & Litefoot Series 01: The Bloodless Soldier)
• Smoke Creatures (3 episodes, e.g. Lisa Bowerman in )
• Snabb (Sean Biggerstaff in Big Finish: The Skull of Sobek)
• Snakedancer (3 episodes, e.g. Ray Lavender in Snakedance: Part One)
• Snatch (4 episodes, e.g. Nick Revell in Doctor Who (Miscellaneous): Slipback: The Final Episode)
• Sneed (Simon Kesans in The Unquiet Dead)
• Sniper (3 episodes, e.g. Steve Swinscoe in The Happiness Patrol: Part Two)
• Sniper (Melissa D Vries in Spyfall: Part One)
• Snooker Player (Ian Kay in Torchwood: Ghost Machine)
• Snowfire (Teresa Gallagher in Big Finish: Circular Time: Spring)
• Snowman (Voice) (Ian McKellen in The Snowmen)
• Snyder (Suzi Arden in Earthshock: Part One)
• Snyper (Trevor Littledale in Big Finish: The Plague Herds of Excelis)
• Sobbing Women (Juliet Machallat in Smith and Jones)
• Soco (Jason May in Torchwood: Everything Changes)
• Socrates (Paul Shelley in Big Finish: The Oracle of Delphi)
• Sofia (Sophie Winkleman in Big Finish: Serpent In The Silver Mask)
• Sokolov (Max Bollinger in Big Finish: Red Planets)
• Sol (Rachel Atkins in Big Finish: Intervention Earth)
• Sol / Security Guard / Comtech / V21 / V616 (4 episodes, e.g. John Dorney in Big Finish: Ravenous 2: Seizure)
• Solana Mercurio (Ayesha Dharker in Planet of the Ood)
• Solara (Misha Malcolm in Big Finish: Colony of Fear: Big Finish)
• Soldeed (4 episodes, e.g. Graham Crowden in The Horns of Nimon: Part One)
• Soldier (25 episodes, e.g. Luke Parsons in Army of Ghosts)
• Soldier (2 episodes, e.g. Peter Symonds in Terror of the Zygons: Part Three)
• Soldier (5 episodes, e.g. Olalekan Lawal Jr in The Doctor's Daughter)
• Soldier (12 episodes, e.g. Marcus Elliott in Into the Dalek)
• Soldier (32 episodes, e.g. David Ulett in The Doctor's Daughter)
• Soldier (John Banks in Big Finish: Paper Cuts)
• Soldier (59 episodes, e.g. James Hall in The Reign Of Terror: A Land of Fear)
• Soldier (5 episodes, e.g. Harry Payne in The Caves of Androzani: Part Two)
• Soldier (John Ainsworth in Big Finish: Nekromanteia)
• Soldier (2 episodes, e.g. Peter Halliday in City of Death: Part Two)
• Soldier (9 episodes, e.g. Paul Alexander in The Mind Robber: Episode 2)
• Soldier (Vaughn Joseph in The Return Of Doctor Mysterio)
• Soldier (2 episodes, e.g. Steve Thomas in Dark Water)
• Soldier (2 episodes, e.g. Bernard G High in The Web of Fear: Episode 1)
• Soldier (Ian Staples in The Caves of Androzani: Part Four)
• Soldier (6 episodes, e.g. Nigel Widner in Invasion of the Dinosaurs: Part Four)
• Soldier (4 episodes, e.g. Pat Gorman in Planet of the Spiders: Part Two)
• Soldier (Nicholas Briggs in Big Finish: The Girl Who Never Was)
• Soldier (10 episodes, e.g. Robin Dawson in The War Machines: Episode 3)
• Soldier (4 episodes, e.g. Frank Skinner in Big Finish: Dark Eyes: 2: The Traitor)
• Soldier (19 episodes, e.g. Carl Watson in The Sontaran Stratagem)
• Soldier (10 episodes, e.g. Carl Watson in The Runaway Bride)
• Soldier (5 episodes, e.g. Patrick Ginter in The Seeds of Doom: Part Six)
• Soldier (19 episodes, e.g. Dominic Letts in Doctor Who (Miscellaneous): The Paradise Of Death: Episode Two)
• Soldier (Mark Wright in Big Finish: Project: Lazarus)
• Soldier (Andrew Ufondo in The Age of Steel)
• Soldier (Aincent Earth) (8 episodes, e.g. Russell Scott in The Myth Makers: Temple of Secrets)
• Soldier (Edward of Wessex) (7 episodes, e.g. Ronald Nunnery in The Time Warrior: Part Two)
• Soldier (English) ( Unassigned Role in )
• Soldier (Greek) (15 episodes, e.g. Pat Gorman in The Myth Makers: Temple of Secrets)
• Soldier (Irongron) (61 episodes, e.g. Steve Brunswick in The Time Warrior: Part One)
• Soldier (Kalid) (3 episodes, e.g. Peter Kodak in Genesis of the Daleks: Part One)
• Soldier (mind of Evil) (9 episodes, e.g. Bombadier A Green in The Mind of Evil: Episode One)
• Soldier (New/Clean) (5 episodes, e.g. Rhiannon Ward in The Doctor's Daughter)
• Soldier (Redcoat) (21 episodes, e.g. Peter Diamond in The Highlanders: Episode 1)
• Soldier (Resurrection) (5 episodes, e.g. Simon Crane in Resurrection of the Daleks: Part One)
• Soldier (Revolutionary (12 episodes, e.g. David Anderson in The Reign Of Terror: A Change of Identity)
• Soldier (San Martino) (17 episodes, e.g. Pat Gorman in The Masque of Mandragora: Part One)
• Soldier (Scotland) (8 episodes, e.g. Marcus Hobbs in Tooth and Claw)
• Soldier (Smugglers) (10 episodes, e.g. Richard Hitchin in The Smugglers: Episode 1)
• Soldier (Stern) (Isaac Stephen Montgomery in Torchwood: The Middle Men)
• Soldier (Thal) (9 episodes, e.g. David Billa in Genesis of the Daleks: Part Two)
• Soldier (The Magicians Apprentice) (Jonathon Ojinnaka in The Magician's Apprentice)
• Soldier (TW, S1E7) (Tom Robertson in Torchwood: Greeks Bearing Gifts)
• Soldier (UNIT) (49 episodes, e.g. Terry Walsh in Inferno: Episode 3)
• Soldier (WWII) (12 episodes, e.g. Jason Weeks in The Empty Child)
• Soldier (Young Male) (Fernando Fernandez in Torchwood: The Blood Line)
• Soldier A (3 episodes, e.g. Ken McGarvie in The Tenth Planet: Episode 1)
• Soldier C (Freddie Eldrett in The Tenth Planet: Episode 3)
• Soldier Clive (Alex Mallinson in Big Finish: Blue Forgotten Planet)
• Soldier D (Roy Pierce in The Tenth Planet: Episode 3)
• Soldier Doll (Barbara Fadden in Night Terrors)
• Soldier in Peking (2 episodes, e.g. David Anderson in Marco Polo: Assassin at Peking)
• Soldier Number 1 (Lawrence Stevenson in Turn Left)
• Soldier Number 2 (Paul Richard Biggin in Turn Left)
• Soldier with clipboard (Barbara Fadden in Turn Left)
• Soldier, Time Lord (5 episodes, e.g. Christopher Finch in The Day of The Doctor)
• Soldiers (Steven Wickham in Big Finish: Son of the Dragon)
• Soldiers (UNIT) (8 episodes, e.g. Marcus Elliott in The Bells of Saint John)
• Soldiers / Static (Chris Dale in Big Finish: Static)
• Soldiers/Fire Fighters (6 episodes, e.g. Bradley Anthony in In The Forest Of The Night)
• Sole (Colin Thomas in The Face of Evil: Part One)
• Solicitor Grey (4 episodes, e.g. David Garth in The Highlanders: Episode 1)
• Solider (4 episodes, e.g. David Morris in Human Nature)
• Solider B (2 episodes, e.g. Terrence Jones in The Tenth Planet: Episode 1)
• Solis (Peter Mayock in The Deadly Assassin: Part Three)
• Soloist (Josephine Desmond in Stageshows: Doctor Who Live)
• Solomon (2 episodes, e.g. Hugh Quarshie in Daleks in Manhattan)
• Solomon (Rupert Laight in Big Finish: Excelis Rising)
• Solomon (S7) (David Bradley in Dinosaurs on a Spaceship)
• Solon (4 episodes, e.g. Philip Madoc in The Brain of Morbius: Part One)
• Solonian (5 episodes, e.g. Reg Cranfield in The Mutants: Episode One)
• Solopado (Kirsty Besterman in The Timeless Children)
• Solos Guard (3 episodes, e.g. Damon Sanders in The Mutants: Episode Five)
• Solow (3 episodes, e.g. Ingrid Pitt in Warriors of the Deep: Part One)
• Solvers/Abbot (4 episodes, e.g. Glen McCready in Big Finish: Doom Coalition: 3: Absent Friends)
• Son (Finnian Cohen-Ennis in Army of Ghosts)
• Sonali (Bindya Solanki in Big Finish: The Juggernauts)
• Sonderal (2 episodes, e.g. Eve Webster in Big Finish: Alien Heart)
• Sondergaard (4 episodes, e.g. John Hollis in The Mutants: Episode Three)
• Songsten (5 episodes, e.g. Charles Morgan in The Abominable Snowmen: Episode Two)
• Sonia (Asha Kingsley in The Woman Who Fell to Earth)
• Sonny (Oliver Mason in Big Finish: Corpse Day)
• Sonny (Frank Rozelaar-Green in Father's Day)
• Sontaran (11 episodes, e.g. Jack Steed in The Sontaran Stratagem)
• Sontaran (17 episodes, e.g. Stuart Fell in The Invasion of Time: Part Four)
• Sontaran Commander Riskaw (Jonathan Watson in War of The Sontarans: Flux: Chapter Two)
• Soogasor (4 episodes, e.g. Ben Crystal in Big Finish: Anti-Genesis: From the Flames)
• Soothsayer (Karen Gillan in The Fires of Pompeii)
• Sophia (2 episodes, e.g. Lysette Anthony in Big Finish: The Secret History)
• Sophie (2 episodes, e.g. Daisy Haggard in The Lodger)
• Sophie (Evie Dawnay in Big Finish: Shadow of Death)
• Sorak (4 episodes, e.g. Michael Osborne in The Horns of Nimon: Part One)
• Sorasta (4 episodes, e.g. Barbara Shelley in Planet of Fire: Part One)
• Sordo (4 episodes, e.g. Oliver Mason in Big Finish: Ruler Of The Universe: The City And The Clock)
• Soren (4 episodes, e.g. Alex Lowe in Big Finish: Time Reaver)
• Sorenson (6 episodes, e.g. Frederick Jaeger in Planet of Evil: Part One)
• Sorvin (Paul Kasey in Planet of the Dead)
• Sound (2 episodes, e.g. Peter Doggart in Big Finish: UNIT: Silenced: In Memory Alone)
• Sound Boom (Robert Bauld in Day of the Daleks: Episode Four)
• Sound Man (Dale Henry in Asylum of the Daleks: Pond Life)
• Space Brat Customer (Sam Kneen in Time Heist)
• Space Captain (2 episodes, e.g. Tom Sheridan in The Rescue: The Powerful Enemy)
• Space Control, Voice (Alan Rowe in The Moonbase: Episode 2)
• Space Guard (Anthony Donovan in The Space Pirates: Episode One)
• Space Tourist (16 episodes, e.g. Andrew O'Leary in Delta and the Bannermen: Part One)
• Spaceman (Terry Walsh in Death to the Daleks: Part One)
• Spacer 1 (Andrew Dickens in Big Finish: The Fearless Part 4)
• Spaniard (2 episodes, e.g. Derek Ware in The Smugglers: Episode 1)
• Spanish Maid (Loraine Vélez in Turn Left)
• Sparks/Marber (Ian Brooker in Big Finish: Chapter Three)
• Speaker (5 episodes, e.g. Claire Wyatt in Big Finish: Return to the Web Planet)
• Special Voice (4 episodes, e.g. Peter Tuddenham in Time and the Rani: Part Three)
• Spectator (25 episodes, e.g. David Cole in The King's Demons: Part One)
• Spectator (Court of King John) (Sandra Goldsmith in The King's Demons: Part One)
• Spectres (Simon Guerrier in Big Finish: The Devil in Ms Wildthyme)
• Spencer (John Newman in Doctor Who And The Silurians: Episode 1)
• Spencer (Michael Lynch in The War Games: Episode Five)
• Spencer (6 episodes, e.g. Victor Winding in The Faceless Ones: Episode 1)
• Spencer (2 episodes, e.g. Imogen Church in )
• Spider (Austin Taylor in Thin Ice)
• Spider (5 episodes, e.g. Barry Smith in Planet of the Spiders: Part Three)
• Spider Voice (14 episodes, e.g. Ysanne Churchman in Planet of the Spiders: Part Three)
• Spike Room Journo (11 episodes, e.g. Andrew Whitlock in The Long Game)
• Spiridon (16 episodes, e.g. David Billa in Planet of the Daleks: Episode Four)
• Spittoon Bearer to the Khan (2 episodes, e.g. Harry Dillon in Marco Polo: Mighty Kublai Khan)
• Spod (4 episodes, e.g. Josh Bolt in Big Finish: Diary of River Song: Series 4: Time in a Bottle)
• Spongiform (4 episodes, e.g. Nicholas Briggs in )
• Spoonhead (Tim Reid in The Bells of Saint John)
• Spragg, Howie (Dimitri Leonidas in The God Complex)
• Spray Painter (2 episodes, e.g. Corey Doabe in Aliens of London)
• Spring-Heeled Sophie (Clare Buckfield in Big Finish: Dead London)
• Spritz (4 episodes, e.g. Letty Butler in Big Finish: Diary of River Song: Series 1: The Boundless Sea)
• Spurrina (Sasha Behar in The Fires of Pompeii)
• Squash Player (2 episodes, e.g. Mitchell Horner in The Leisure Hive: Part One)
• Squawk (Toby Longworth in The Infinite Quest)
• Squeak (Adele Silva in Survival: Part Three)
• Squire (5 episodes, e.g. Paul Whitsun-Jones in The Smugglers: Episode 1)
• Squire (Gordon Richardson in Doctor Who And The Silurians: Episode 2)
• Squire (Sir Giles) (Terry Sachs in The King's Demons: Part One)
• Squire of Sir Geoffrey (Paul Murray in The King's Demons: Part One)
• Squire's Manservant (2 episodes, e.g. Raymond Bales in The Smugglers: Episode 2)
• Squire, The (David Jackson in Big Finish: Comeback)
• SSC Control/Comp/Helm/Operations Officer (Samantha Sanns in Big Finish: Scorpius)
• Sskann (Jason Haigh-Ellery in Big Finish: Red Dawn)
• Sskel (3 episodes, e.g. Sonny Caldinez in The Monster of Peladon: Part Four)
• Ssorg (4 episodes, e.g. Sonny Caldinez in The Curse of Peladon: Episode One)
• ST58 (Conrad Westmaas in Big Finish: The Claws of Santa)
• Stable Boy (Sean Chick in Deep Breath)
• Stacey (7 episodes, e.g. Kristy Philipps in Big Finish: Aliens Among Us - Part 2: Love Rat)
• Stacey (Eastenders) (Lacey Turner in Related Items: Eastenders (Valentines 2008))
• Stacey Campbell (2 episodes, e.g. Jessica Gunning in Partners in Crime)
• Stackhouse (Terrence Hardiman in Big Finish: The English Way of Death)
• Stafel/1st Security Guard (Toby Longworth in Big Finish: The Song of Megaptera)
• Staff (2 episodes, e.g. Clare Reynolds in The Runaway Bride)
• Staff Sgt. Arnold (6 episodes, e.g. Jack Woolgar in The Web of Fear: Episode 1)
• Stafford, Heidi (2 episodes, e.g. Holly Atkins in The Sarah Jane Adventures: The Lost Boy: Part One)
• Stafford, Jay (2 episodes, e.g. Jay Simpson in The Sarah Jane Adventures: The Lost Boy: Part One)
• Stage Hand (2 episodes, e.g. James Welsh in Daleks in Manhattan)
• Stage Manager (Wayne Cater in The Unquiet Dead)
• Stagehand/Tech (Zachery Mason in Doctor Who (Miscellaneous): An Adventure In Space And Time)
• Stalkingwolf, Jimmy (Tim Howar in Dreamland)
• Stall holder (Margot Thomas in The Romans: The Slave Traders)
• Stallholder (Phil Cornwell in The Fires of Pompeii)
• Stallslady (2 episodes, e.g. Peggy Mount in The Greatest Show in the Galaxy: Part One)
• Stan (Richard Parry in Flatline)
• Stan and Ollie ( Laurel and Hardy in The Impossible Astronaut)
• Stand In (Terry Walsh in Planet of the Spiders: Part One)
• Standardtenfuhrer Joachim Wolff (Mark Gatiss in Big Finish: Just War)
• Standing/Olivia (4 episodes, e.g. Anjella Mackintosh in Big Finish: Breaking Bubbles)
• Stapleton Petherbridge (Tony Gardner in Big Finish: The Wrong Doctors)
• Stark / Prosecutor (6 episodes, e.g. Robert Whitelock in Big Finish: Diary of River Song: Series 7: Colony of Strangers)
• Starkey (26 episodes, e.g. Keegan Joyce in K-9: Regeneration)
• Starline Galactic Villain (Clem So in The Husbands of River Song)
• Starling (4 episodes, e.g. Claire Calbraith in Big Finish: New Counter-Measures: Series One: Nothing to See Here)
• Starlos/Barman (Jeremy Fielder in Big Finish: Death to the Daleks!)
• Station Computer (4 episodes, e.g. Jonny Green in Big Finish: The Lives of Captain Jack: The Year After I Died)
• Station Policeman (2 episodes, e.g. Jim Delaney in The Talons of Weng-Chiang: Part One)
• Station Sergeant (Clifford Earl in The Daleks' Master Plan: The Feast of Steven)
• Statue (4 episodes, e.g. Eve Martin in The Dominators: Episode 2)
• Steadfast (Ralf Little in Smile)
• Steamroller Man (Andrew Dickens in Big Finish: Masquerade)
• Steel Specs (Hywel Joh in Big Finish: The Hollows of Time)
• Steele, Mr (Richard Lothian in Rosa)
• Stefan (Andrew Fettes in Big Finish: The Nightmare Fair)
• Stefan Radek (Stuart Crossman in Big Finish: Hothouse)
• Steffen (Adrian Bower in Big Finish: Survival of the Fittest)
• Steffi Ehrlich (Cosima Shaw in The Waters of Mars)
• Steinberger P Green (Royston Tickner in The Daleks' Master Plan: The Feast of Steven)
• Stella (Doña Croll in Torchwood: The Dead Line)
• Stella/Bella (Helen Goldwyn in Big Finish: Paradise 5)
• Stellar (2 episodes, e.g. Miranda Borman in Dragonfire: Part One)
• Stelpor (Alistair Lock in Big Finish: Last of the Titans)
• Stemp (Joannah Tincey in Big Finish: The Elite)
• Stenck (2 episodes, e.g. Jonathan Watson in Survivors of the Flux: Flux: Chapter Five)
• Stennar/Manus (Neville Watchurst in Big Finish: The Song of Megaptera)
• Stent / Sontarans (3 episodes, e.g. Dan Starkey in )
• Stephanie Andrews (2 episodes, e.g. Clare Buckfield in Big Finish: The Third Doctor Adventures Volume 02: The Transcendence of Ephros)
• Stephanie Wilton (4 episodes, e.g. Sinead Keenan in Big Finish: The Worlds of Doctor Who: Mind Games)
• Stephano/Klossi/Trink/Setebos (Aaron Neil in Big Finish: Maker Of Demons)
• Stephen (5 episodes, e.g. Andrew Westfield in Big Finish: Jago & Litefoot Series 03: Dead Men’s Tales)
• Stephen Gibson (Warren Brown in Big Finish: Industrial Evolution)
• Stephen Keyser (Mark Wright in Big Finish: The Fearmonger)
• Stephen Taylor (3 episodes, e.g. Peter Purves in Big Finish: The Perpetual Bond)
• Stern (4 episodes, e.g. Lu Corfield in Big Finish: Rage of the Time Lords: The Survivor)
• Sterris (John Dorney in Big Finish: The Dalek Contract)
• Steve Ross (Mac McDonald in Big Finish: Believe)
• Steven (John Finnemore in Big Finish: New Adventures of Bernice Summerfield: Volume One: Good Night, Sweet Ladies)
• Steven (6 episodes, e.g. Owen Donovan in The Lodger)
• Steven Carter (5 episodes, e.g. Bear McCausland in Torchwood: Children Of Earth: Day One)
• Steven Godbold / Computer (4 episodes, e.g. Aaron Neil in Big Finish: Diary of River Song: Series 2: The Unknown)
• Stevens (6 episodes, e.g. Jerome Willis in The Green Death: Episode One)
• Steward (4 episodes, e.g. Alan Thompson in Doctor Who (Miscellaneous): Slipback: The Final Episode)
• Steward (Simon Paisley Day in The End Of The World)
• Steward (10 episodes, e.g. Craig Palmer in Voyage of the Damned)
• Steward (Ron Donachie in Tooth and Claw)
• Steward (Simon Gregor in The Vampires of Venice)
• Stewardess (2 episodes, e.g. Sally Sinclair in Nightmare of Eden: Part One)
• Stewart (2 episodes, e.g. James Culliford in Frontier In Space: Episode One)
• Stewart (Francis Magee in Big Finish: Flip-Flop)
• Stien (2 episodes, e.g. Rodney Bewes in Resurrection of the Daleks: Part One)
• Stike (2 episodes, e.g. Clinton Greyn in The Two Doctors: Part Two)
• Stimson (David Allister in The Leisure Hive: Part Two)
• Stokes (Michael Troughton in Big Finish: The Romance of Crime)
• Stone (Ben Bishop in Big Finish: The Justice of Jalxar)
• Stone Dalek (Barnaby Edwards in The Big Bang)
• Stone/Ouida (Nicola Bryant in Big Finish: Zagreus)
• Stonn (3 episodes, e.g. Christopher Ryan in Big Finish: The Paternoster Gang: Heritage 1: The Cars That Ate London!)
• Stooge (Graeme Henderson in Stageshows: Doctor Who Live)
• Stooge (Paul Hardy-Brown in Stageshows: Doctor Who Live)
• Stor (3 episodes, e.g. Derek Deadman in The Invasion of Time: Part Four)
• Storr (4 episodes, e.g. Angus Lennie in The Ice Warriors: One)
• Stott (4 episodes, e.g. Barry Andrews in Nightmare of Eden: Part One)
• Stotz (4 episodes, e.g. Maurice Roëves in The Caves of Androzani: Part One)
• Stout, Pikeman William (Reuben Johnson in The Woman Who Lived)
• Strackman Lux (2 episodes, e.g. Steve Pemberton in Silence in the Library)
• Straith (Tony Barton in Big Finish: Absolution)
• Stralla Cushing (4 episodes, e.g. Judith Roddy in Big Finish: Ravenous 1: Their Finest Hour)
• Strang/Hutchins (Dan Starkey in Big Finish: The King of Sontar)
• Stranger (Bernard Horsfall in The Mind Robber: Episode 2)
• Stratton (2 episodes, e.g. Jonathon David in Attack of the Cybermen: Part One)
• Strax (11 episodes, e.g. Dan Starkey in Big Finish: Jago & Litefoot & Strax: The Haunting)
• Straxus (10 episodes, e.g. Nickolas Grace in Big Finish: Human Resources Part 1)
• Street Performer (3 episodes, e.g. Xavier Huerga in The Bells of Saint John)
• Street Singers (The Cambridge Choristers in Shada: Part Two)
• Striker (4 episodes, e.g. Keith Barron in Enlightenment: Part One)
• String Quartet - Cello (Victoria Wadey in The Lazarus Experiment)
• String Quartet - Violin (3 episodes, e.g. Jo Buckland in The Lazarus Experiment)
• Strong Man (Roy Stewart in Terror of the Autons: Episode Two)
• Strood (Jamie Bradley in Bad Wolf)
• Stuart (Christopher Llewellyn in Father's Day)
• Stuart (2 episodes, e.g. Dougie McMeekin in Big Finish: Black Thursday)
• Stuart (Sean Oliver in Survival: Part One)
• Stuart Dale (Todd James in Big Finish: The Blood Furnace)
• Stuart Hyde (5 episodes, e.g. Ian Collier in The Time Monster: Episode One)
• Stuart, James (Alan Cumming in The Witchfinders)
• Stubbs (5 episodes, e.g. Christopher Coll in The Mutants: Episode One)
• Stubbs (2 episodes, e.g. Nicholas Khan in )
• Student (David Cole in Arc of Infinity: Part One)
• Student (24 episodes, e.g. Tom Boulding in The Sontaran Stratagem)
• Student (4 episodes, e.g. Aly Cruickshank in Big Finish: Aliens Among Us - Part 2: Love Rat)
• Student (8 episodes, e.g. Bronson Shaw in The Krotons: Episode One)
• Student (4 episodes, e.g. David Cole in Shada: Part One)
• Student (2 episodes, e.g. Claudio Laurini in The Sound of Drums)
• Student (Coal Hill School) (6 episodes, e.g. Ellie James in Class: For Tonight We Might Die)
• Student 1 (Moses Adejimi in Class: Brave-ish Heart)
• Student at Prison (Maureen Race in The Mind of Evil: Episode One)
• Student B'arech (John Dorney in Big Finish: Insurgency)
• Student Galadina (2 episodes, e.g. Jenny Livsey in Big Finish: Insurgency)
• Student Gillestes (Lucy Beresford in Big Finish: Pandora)
• Student Neeloc (Stuart Piper in Big Finish: Insurgency)
• Student Taylor (Gary Bakewell in Big Finish: Insurgency)
• Studio Staff (5 episodes, e.g. Behnaz Akghar in The Idiot's Lantern)
• Stunt Base Guard (5 episodes, e.g. Derek Lea in Dalek)
• Stunt Bus Driver (Christmas Invasion) (Dean Forster in The Christmas Invasion)
• Stunt Cab Driver/Car Driver (Derek Lea in Partners in Crime)
• Stunt Civillians (2 episodes, e.g. Kim McGarrity in The Day of The Doctor)
• Stunt Courier (Dean Forster in Smith and Jones)
• Stunt Cybercontroller (Paul Kennington in The Age of Steel)
• Stunt Cyberman (Paul Kennington in Doomsday)
• Stunt Cybermen (4 episodes, e.g. James O'Dee in Rise of the Cybermen)
• Stunt Diner (George Cottle in Boom Town)
• Stunt Double (Nick Hobbs in The Claws of Axos: Episode Two)
• Stunt Double for Female Doll (Bean Peel in Night Terrors)
• Stunt Driver (3 episodes, e.g. Reg Dent in The War Games: Episode Two)
• Stunt Driver Mum (Tina Maskell in The Runaway Bride)
• Stunt Driver Smart (Richard Hamnett in The Runaway Bride)
• Stunt Droid (2 episodes, e.g. Rob Jarman in Deep Breath)
• Stunt Dummy (3 episodes, e.g. Holly Lumsden in Rose)
• Stunt Engineer (Dean Forster in Voyage of the Damned)
• Stunt Female Hoover (Kim McGarrity in Evolution of the Daleks)
• Stunt Guard (2 episodes, e.g. Tony Lucken in The End of Time: Part One)
• Stunt Guard (Peladon) (6 episodes, e.g. Billy Horrigan in The Curse of Peladon: Episode Four)
• Stunt Man (163 episodes, e.g. Alan Chuntz in Planet of the Spiders: Part Four)
• Stunt Monk (3 episodes, e.g. Gordon Seed in A Good Man Goes to War)
• Stunt Motorcyclist (3 episodes, e.g. Roy Scammell in The Ambassadors of Death: Episode 2)
• Stunt Mourners (3 episodes, e.g. Gordon Seed in The Next Doctor)
• Stunt Performer (4 episodes, e.g. Belinda McGinley in The Husbands of River Song)
• Stunt Pig Man (Guy List in Evolution of the Daleks)
• Stunt Pirate (9 episodes, e.g. Buddy Windrush in The Smugglers: Episode 4)
• Stunt Policeman (3 episodes, e.g. Les Conrad in The Ambassadors of Death: Episode 7)
• Stunt Receptionist (Stephanie Carey in Voyage of the Damned)
• Stunt Sailor (3 episodes, e.g. David Cannon in The Chase: Flight Through Eternity)
• Stunt Santa Driver (George Cottle in The Runaway Bride)
• Stunt Secretary (Sarah Franzl in Boom Town)
• Stunt Security Guard (6 episodes, e.g. Stuart Clarke in Bad Wolf)
• Stunt Tea Lady (Lucy Allen in Boom Town)
• Stunt UNIT Soldier (3 episodes, e.g. Derek Ware in The Ambassadors of Death: Episode 7)
• Stunt Warrior (Stuart Fell in Castrovalva: Part Two)
• Stunt Working Class Man (2 episodes, e.g. Jason Hunjan in The Next Doctor)
• Stuntman (5 episodes, e.g. Fred Haggerty in The Time Meddler: The Meddling Monk)
• Stunts (353 episodes, e.g. Bob Baline in The Ambassadors of Death: Episode 7)
• Stunts Performer (2 episodes, e.g. Shelly Benson in The Age of Steel)
• Sturmer (Mark Donovan in Big Finish: The Wormery)
• Styggron (4 episodes, e.g. Martin Friend in The Android Invasion: Part One)
• Styles (2 episodes, e.g. Rula Lenska in Resurrection of the Daleks: Part One)
• Stylist (Lanie Rose in Asylum of the Daleks)
• Stylist/Crazy Hank (2 episodes, e.g. Peter Sheward in Big Finish: Missing Persons: Big Dig)
• Styre (4 episodes, e.g. Kevin Lindsay in The Sontaran Experiment: Part One)
• Sub-Commander Sstast (Hylton Collins in Big Finish: Red Dawn)
• Subject One (William Boyde in Big Finish: The Harvest)
• Submariner (11 episodes, e.g. Eran Backler in Cold War)
• Sue (4 episodes, e.g. Marilyn Le Conte in Big Finish: Aliens Among Us - Part 3: Poker Face)
• Sue (Lizzie Hopley in Big Finish: Night Thoughts)
• Suit (3 episodes, e.g. Ian Wilson in Army of Ghosts)
• Suited Customer (Junior Laniyan in Time Heist)
• Suits (Robert Forknall/Ian Hallard in Big Finish: The Company of Friends: Izzy's Story)
• Suki (Anna Maxwell-Martin in The Long Game)
• Sullerman / Massey (2 episodes, e.g. Jon Culshaw in )
• Sultan (Alexander Siddig in Big Finish: 1001 Nights)
• Sunder, Ramesh (Asif Khan in The Woman Who Fell to Earth)
• Sunnaa (3 episodes, e.g. Jane Enshawe in The Macra Terror: Episode 1)
• Sunroof Screamer (Jason Medwin in Torchwood: Dead of Night)
• Super Mote (2 episodes, e.g. Stephen Calcutt in The Armageddon Factor: Part Five)
• Superintendent Galgo / Zaleb 5 (Phil Cornwell in Big Finish: Serpent In The Silver Mask)
• Supervisor (2 episodes, e.g. Douglas Stark in Time-Flight: Part One)
• Supervisor/Acolyte (Phillip Franks in Big Finish: The Warehouse)
• Supplier (Alistair Lock in Big Finish: The Land of the Dead)
• Supreme Councillor Geflo (Jaimi Barbakoff in Big Finish: The Fourth Doctor Boxset: The Foe from the Future)
• Supreme Dalek (Nicholas Briggs in The Stolen Earth)
• Supreme Leader Romana (4 episodes, e.g. Lalla Ward in Big Finish: Gallifrey V: Arbitration)
• Supt. Reynolds (Leonard Trolley in The Faceless Ones: Episode 6)
• Surgeo (Brian Miller in Big Finish: Gallifrey IV: Reborn)
• Surgeon (Paul Brightwell in World Enough And Time)
• Surgeon (2 episodes, e.g. Von Pearce in The End Of The World)
• Suri/CAIN/The Pyralis (Jess Robinson in Big Finish: The Pyralis Effect)
• Surly Steve (John Banks in Big Finish: Graceless II: The Flood)
• Surus (Ian Brooker in Big Finish: Auld Mortality)
• Surveillance Guy (Danny Szam in Torchwood: The Gathering)
• Susan (Katie Wimpenny in Big Finish: The Kingmaker)
• Susan (Daisy Douglas in Big Finish: The Doomwood Curse)
• Susan (Genevieve Swallow in Big Finish: Deadline)
• Susan (26 episodes, e.g. Roberta Tovey in Aaru Movies: Dr Who and the Daleks)
• Susan (Whatever Happened To) (Jane Asher in Doctor Who (Miscellaneous): Whatever Happened To... Susan Foreman?)
• Susan Broadstairs (Abigail McKern in Big Finish: Charlotte Pollard: Series 1: The Shadow at the Edge of the World)
• Susan Campbell (4 episodes, e.g. Carole Ann Ford in Big Finish: Relative Dimensions)
• Susan Mendes (18 episodes, e.g. Sarah Mowat in Big Finish: Return of the Daleks)
• Susan Q. (3 episodes, e.g. Lesley Dunlop in The Happiness Patrol: Part One)
• Susannah (Rachel Atkins in Big Finish: The Triumph of Sutekh: The Tears of Isis)
• Susannah Nash (Jo Woodcock in Big Finish: Static)
• Susie Costello (Indira Varma in Big Finish: Sync)
• Susie Fontana Brooke (3 episodes, e.g. Jenette de Vlieger in The Waters of Mars)
• Susie/Sylvie (Andree Bernard in Big Finish: The Sixth Doctor: The Last Adventure: Stage Fright)
• Sutcliffe (Nicholas Burns in Thin Ice)
• Sutekh (7 episodes, e.g. Gabriel Woolf in Pyramids of Mars: Part Two)
• Sutekh the Destroyer (3 episodes, e.g. Gabriel Woolf in Big Finish: The Triumph of Sutekh: The Pyramid of Sutekh)
• Suzanne (Andrea Harris in The Stolen Earth)
• Suzette Chambers (Sue Kelvin in Partners in Crime)
• Suzie (Rhian James in Father's Day)
• Suzie Costello (4 episodes, e.g. Indira Varma in Torchwood: Everything Changes)
• Suzie's Father (Badi Uzzaman in )
• SV7 (4 episodes, e.g. Miles Fothergill in The Robots of Death: Part One)
• SV90 / V88 / V19 (3 episodes, e.g. Jon Culshaw in Big Finish: The Robots Volume One: The Robots of Life)
• Sven (3 episodes, e.g. David Anderson in The Time Meddler: The Meddling Monk)
• Svild (Dan Starkey in War of The Sontarans: Flux: Chapter Two)
• Swabb (Tom Farrelly in The Infinite Quest)
• Swan (Nicholas Pegg in Big Finish: Doctor Who and the Pirates)
• Swann (3 episodes, e.g. Christopher Burgess in The Enemy of the World: Episode 4)
• Swapnil Khan (Nadim Sawalha in Big Finish: The Magic Mousetrap)
• Swarm (5 episodes, e.g. Sam Spruell in The Halloween Apocalypse: Flux: Chapter One)
• Swat Leader (Darren Dupree Washington in Torchwood: Immortal Sins)
• SWAT Member (Michael Chomiak in Torchwood: Immortal Sins)
• Sweep (Robert Skinner in The Next Doctor)
• Swimmer (2 episodes, e.g. Andrew Mason in Full Circle: Part One)
• Swordfish (4 episodes, e.g. Hamish Clark in Big Finish: Doom Coalition: 2: Beachhead)
• Sycorax (15 episodes, e.g. Andrew Mitchel in The Christmas Invasion)
• Sycorax Leader (2 episodes, e.g. Sean Glider in The Christmas Invasion)
• Sycorax Warrior (3 episodes, e.g. Lee Griffiths in The Christmas Invasion)
• Sydney (Ian Brooker in Big Finish: Deadline)
• Sydney (David Walliams in Factual: Comedy Sketches: The Pitch of Fear)
• Sydney Newman (Brian Cox in Doctor Who (Miscellaneous): An Adventure In Space And Time)
• Sydney's Secretary (Honorah Bourton in Doctor Who (Miscellaneous): An Adventure In Space And Time)
• Sydyck (4 episodes, e.g. Vikash Bhai in Big Finish: Seventh Doctor New Adventures: Volume 1: The Trial of a Time Machine)
• Sylas (Lewin Lloyd in Orphan 55)
• Sylvest (Dennis Chinnery in The Twin Dilemma: Part One)
• Sylvia (Sara Carver in Games: City Of The Daleks)
• Sylvia Noble (22 episodes, e.g. Jacqueline King in The Runaway Bride)
• Sylvia Wimpole/Waveform/Effy (Charlotte Salt in Big Finish: Criss-Cross)
• Sylvia's Friend (4 episodes, e.g. June Purnell in Partners in Crime)
• Sylvie (3 episodes, e.g. Chandrika Chevli in )
• Sylvie/Liz Morrison (Miranda Keeling in Big Finish: Dominion)
• Symposiarch Cawdrey (Oliver Hume in Big Finish: ...ish)
• Synge (2 episodes, e.g. Derek Crewe in The Sun Makers: Part Three)
• System (Janie Booth in Big Finish: The Harvest)
• System (Beth Chalmers in Big Finish: Forty-Five: The Word Lord)