Last updated 24 March 2024

Cast
Jon PertweeDoctor Who
Caroline JohnLiz Shaw
Nicholas CourtneyBrigadier Lethbridge-Stewart
Ronald AllenRalph Cornish
Robert CawdronTaltalian
John AbineriCarrington
Ric FelgateVan Lyden
Michael WisherJohn Wakefield
Cheryl MolineauxMiss Rutherford
Ray ArmstrongGrey
Robert RobertsonCollinson
Garth WilkinsCollinson's Man
Leslie ShannonCollinson's Man
Ray MiminsCollinson's Man
Vernon PrestonCollinson's Man
Caroline MylonControl Room Assistant
Clive RogersControl Room Assistant
Lindsey ScottControl Room Assistant
Rod PeersControl Room Assistant
Roger MinnisControl Room Assistant
Roy BrentControl Room Assistant
Wilma OswaldControl Room Assistant
Alan ChuntzStunt Man
Derek WareStunt Man
Max DiamondStunt Man
Les ClarkeStunt Policeman
Terry WalshStunt Man
Billy HorriganStunt Man
BG HerthUNIT Driver
Bruce CoxUNIT Driver
Richard PickfordUNIT Driver
Crawford LyallUNIT Soldier
Douglas RoeUNIT Soldier
Eric KentUNIT Soldier
Jeff BrightlyUNIT Soldier
Keith SimonsUNIT Soldier
Steve SmartUNIT Soldier
Stuart MyersUNIT Soldier
Tom LairdUNIT Soldier
Dallas CavellQuinlan
Bernard MartinControl Room Assistant
Juan MorenoDobson
James HaswellCorporal Champion
Derek WareUnit Sergeant
Geoffrey Brighty(extra)
Keith SimonsControl Room Assistant
Ray MiminsControl Room Assistant
Sally AvoryControl Room Assistant
Stella ConwayControl Room Assistant
JW PeckowskiHelicopter Pilot
Michael DugganLow-Loader Driver
Jo SantosUNIT Soldier
Roy BrentUNIT Soldier
Marc BoyleStunt Motorcyclist
Roy ScammellStunt Motorcyclist
Roy StreetStunt Motorcyclist
William DysartReegan
Cyril ShapsLennox
Gordon SterneHeldorf
Steve PetersAstronaut
Neville SimonsAstronaut
Paul WarrenHenchman
Tony BroadborneHenchman
Sue BourneCornish's Assistant
Dinny PowellHeavies
Gordon StothardHeavies
Roy ScammellPaterson
Derek MartinStunt Man
David JoyceTechnician
Pat GormanTechnician
Les ConradUNIT Soldier
Ron ConradUNIT Soldier
AJ BenningCrane Drivers
A LovettCrane Drivers
John LordMasters
Roy ScammellPeterson
Max FaulknerStunt Man
Max DiamondTechnician
Nick HobbsTechnician
Ric FelgateAstronaut
Tony HarwoodFlynn
John LeveneSergeant Benton
James ClaytonPrivate Parker
Joanna RossControl Room Assistant
Carl ConwayControl Room Assistant
Roy ScammellTechnician
Barbara FayeControl Room Assistant
Dennis HaywardControl Room Assistant
Paul GilmanControl Room Assistant
David AldridgeUNIT Soldier
Peter Noel CookAlien Space Captain
Peter HallidayAlien Voice
Neville SimonsMichaels
Steve PetersLefee
Diana HoltControl Room Assistant
Barry KenningtonUNIT Soldier
Geoffrey BeeversPrivate Johnson
Alf JointHeavy
Jo SantosUNIT Soldier
Keith SalmonControl Room Assistant
Stuart MyersUNIT Soldier
Tom O'LearyGatekeeper
Tony LangControl Room Assistant
Leslie ShannonCameraman
Roy ReevesCameraman
David J GrahamControl Room Assistant
Sheila VivianControl Room Assistant
Barry KenningtonHeavy
Royston FarrellMilitary Policeman
Derek ChaferMilitary Policeman
Les ClarkMilitary Policeman
Max DiamondMilitary Policeman
Mike HorsburghStunt Man
Tony BroadborneStunt Man
Les ConradStunt Policeman
Marc BoyleStunt Policeman
Derek WareStunt UNIT Soldier
Mike StevensStunt UNIT Soldier
Terry WalshStunt UNIT Soldier
Bob BalineStunts
David PikeUNIT Soldier
Ron GregoryUNIT Soldier
Steve KellyUNIT Soldier
Production Team
David WhitakerWriter
Michael FergusonDirector
Barry LettsProducer
David Myerscough-JonesDesigner
Terrance DicksScript Editor
Christine RawlinsCostumes
Marion RichardsMake-up
HAVOCAction by
Peter DayVisual Effects Designer
A A EnglanderFilm Cameraman
Don GoddenFilm Editor
Dudley SimpsonIncidental Music
Ron GrainerTitle Music
Trevor RayWriter
Malcolm HulkeWriter
Terrance DicksWriter
Brian HodgsonSpecial Sound
BBC Radiophonic WorkshopSpecial Sound
BBC Radiophonic Workshopand
Geoff ShawStudio Lighting
Gordon MackieStudio Sound
Bernard FoxTechnical Manager
John BarclayVision Mixer
Andy StaceyGrams Operator
Alan GomeryInlay Operator
Nicholas JohnProduction Assistant
Margot HayhoeAssistant Floor Manager
John TurnerFloor Assistant
Pauline SilcockAssistant
Teresa WrightLocation Make-Up
Doug MawsonFilm Sound
Mervin BroadwayAssistant Sound Recordist
Roger TwymanFilm Camera Assistant
Nigel WaltersFilm Camera Assistant
Jeff HiggsVideotape Editor
Ron BowmanVideotape Editor
Dick ColesDesign Assistant
Sandra BrenholzProduction Secretary
Kate NemetDirector's Assistant
Barbara BuchananArtist Booking
Arthur FungeDresser
Jean HolderDresser
Delia DerbyshireTitle Music Arranger
Bernard LodgeTitle Sequence
Chris WimbleFilm Editor
Ralph WaltonStudio Lighting
Tony LeggoFilm Cameraman
Brian HilesStudio Sound
Dave SydenhamStudio Lighting
Ian ScoonesVisual Effects Designer