As the situation worsens at the refinery, Chief Robson refuses to halt the gas flow. Elsewhere, the weed extends its influence and Mrs Harris receives sinister visitors.

The Doctor makes a return visit to Peladon some years after his previous visit. There he discovers that several miners have died and the ghost of Aggedor is to blame.

Starring Colin Baker
A two-part story written by Eric Saward
Life and death become confused for the Doctor on Necros.
*CEEFAX SUBTITLES

Sir Terry Wogan presents more magical moments from his days in the hotseat of Britain's best-loved chat show. In this episode, he's focusing on some of the biggest stars of the small screen, including the cast of Dad's Army, Star Trek's Leonard Nimoy, Doctor Who's Colin Baker, and a bizarre exchange with Parker from Thunderbirds. There is also an explosive encounter with Ade Edmondson, plus music from Dudley Moore, Lulu and Kylie Minogue.

Joanna Page is best known for her role as Stacey in the Ruth Jones/James Corden written Gavin and Stacey. Other notable acting roles have included Candy in the Russell T Davies-written Mine All Mine, and as Judy in the film Love, Actually, and recent appearances include The Syndicate, Gates and the voice of Poppy Cat.

James Maxwell was an American actor, theatre director and writer, particularly associated with the Royal Exchange Theatre in Manchester.

He appeared in the 1978 story Underworld.

He was born in Worcester, Massachusetts, USA, but spent most of his career in the United Kingdom and died in London. 

He came to England at the age of 20 to train at the Old Vic theatre school. 

He acted in many productions including Prospero in The Tempest in 1969 and Thomas More in A Man for All Seasons in 1975. He also directed Arms and the Man with Tom Courtenay, Jenny Agutter and Brian Cox in 1973.

He was one of the founding artistic directors of the Royal Exchange theatre in Manchester. He appeared in both the opening productions: Kleist's The Prince of Homburg and Sheridan's The Rivals and remained an artistic director until his death in 1995. 

As well as acting in many productions over the course of 20 years, he adapted several novels including The Count of Monte Cristo, Pride and Prejudice and The Moonstone. He also directed over 20 productions.

His best-known television role was as King Henry VII in a BBC2 drama series, Shadow of the Tower. He also appeared as Osmond in a television serial of Henry James' Portrait of a Lady (1967), The Avengers and The Saint.

He also seen in the films Private Potter (1962), Far from the Madding Crowd (1967), Otley (1968) and One Day in the Life of Ivan Denisovich (1970). 

Louis Marks was a British script writer and producer mainly for the BBC. 

He wrote for Doctor Who on four occasions. "Planet of Giants", which opened the second season of the programme in 1964, "Day of the Daleks" in 1972,  "Planet of Evil"; and  "The Masque of Mandragora"

He began his writing career by contributing to The Adventures of Robin Hood in 1959. His scripts included The Man Who Finally Died (1967) for the BBC and Special Branch for Thames Television (1970). 

He also wrote for Danger Man with Patrick McGoohan, and for the Doomwatch science fiction series.

He also served as a script editor on programmes such as Bedtime Stories (1974); The Stone Tape (1972); and No Exit (1972). Marks' producer credits include The Lost Boys (1978), Fearless Frank (1979), the BBC's adaptation of the Three Theban plays (between 1984 and 1986), and the BBC's adaptation of George Eliot's Middlemarch (1994). 

He worked with Jack Clayton on an adaption of Muriel Spark's Memento Mori in 1991, Harold Pinter on The Hothouse 1987 and with Mike Leigh on Grown-ups 1982. His most recent critical success was his production of Daniel Deronda by George Eliot for the BBC in 2002.

Anthony Jacobs played Doc Holliday in the Doctor Who story The Gunfighters.

During filming of this story, he brought his son Matthew Jacobs to the set. Matthew would later go on to write the 1996 telefilm, Doctor Who.

Charles Morgan appeared in two Doctor Who stories: as Songsten in The Abominable Snowmen and the Gold Usher in The Invasion of Time.

Appeared in After Henry, Never the Twain, Cover Her Face, Cold Warrior, Angels, Let There Be Love, The Return of the Soldier, Tenko, The Seven Dials Mystery, Wainwright's Law, Escape, Why Didn't They Ask Evans?, Quincy's Quest, Shadows, Backs to the Land, Within These Walls, Miss Jones and Son, The Fuzz, The Onedin Line, Armaguedon, Robin's Nest, The Howerd Confessions, Spring and Autumn, I Didn't Know You Cared, Crown Court, Man About the House, The Main Chance, Barlow, The Top Secret Life of Edgar Briggs, Bless This House, Microbes and Men, The Tommy Cooper Hour, And Mother Makes Five, Special Branch, Helen: A Woman of Today, New Scotland Yard, Menace, The Rivals of Sherlock Holmes, War & Peace, Dad's Army, Villains, Holly, Au Pair Girls, Ace of Wands, Never Mind the Quality, Feel the Width, Buffer, Wreckers at Dead Eye, Z Cars, Mystery and Imagination, Germinal, Hadleigh, Randall and Hopkirk (Deceased), The Avengers, Middlemarch, Sergeant Cork, The Gamblers, The Revenue Men, Sexton Blake, No Hiding Place, Softly Softly, The Wednesday Play, Crossroads, Ghost Squad, The Saint, The Boys, Out of This World, Armchair Theatre, Cash on Demand, The Pot Carriers, Maigret, The Day the Earth Caught Fire, You Can't Win, Deadline Midnight, Harpers West One, Three Live Wires, The Citadel, ITV Play of the Week, The Roving Reasons, Hell Is a City, Probation Officer, Emergency-Ward 10, The Naked Lady, All Aboard, The One That Got Away, The New Adventures of Charlie Chan, Radio Cab Murder, Train of Events 

David Collings is an English actor. He has played various roles on television, including the leading dramatic role in Fyodor Dostoyevsky's Crime and Punishment in 1964 (with Associated-Rediffusion Television).

Collings has played historical characters such as Percy Grainger in Ken Russell's Song of Summer (1968), John Ruskin in The Love School (1975), a BBC series about the Pre-Raphaelites, and Sir Anthony Babington in Elizabeth R. In 1975 he portrayed William Wilberforce in the The Fight Against Slavery, and starred as William Pitt in Prince Regent in 1979.

He appeared three in the long-running British science fiction television series Doctor Who including Vorus in Revenge of the Cybermen, Poul in The Robots of Death and Mawdryn in the serial Mawdryn Undead. He has also played an alternate Doctor in one of the audio plays by Big Finish Productions in the Doctor Who Unbound series, Full Fathom Five.

Collings returned to the role of Poul, now named Paulus, in the episode Hidden Persuaders of the audio drama series Kaldor City.

On radio he portrayed Legolas in the BBC Radio 4 adaptation of The Lord of the Rings.

He also appeared as Deva in the final episode of Blake's 7 and as the character of 'Silver' in several of the Sapphire and Steel adventures.

He also appeared in the TV series Danger Man, Mystery and Imagination, UFO and Gideon's Way in which he played an emotionally disturbed man attacking young women in the episode The Prowler.

Collings played the character of Bob Cratchit in the 1970 film musical adaptation of Scrooge.

He did the voice acting for the Japanese television series Journey to the West, released in English-speaking countries as Monkey.

In 2006, Collings was the reader of the critically acclaimed recordings of The Complete Ghost Stories of M. R. James.

He is also noted for his children's television appearances including the role of Julian Oakapple in Midnight is a Place (1977). In 1989 he played Charn (the villain) in Through The Dragon's Eye and had a recurring role as the headmaster in Press Gang from 1989-1993.

He played the parts of Mortimer the Elder and Matrevis in the summer 2011 production of Edward II at the Royal Exchange, Manchester, which also featured Sam Collings.

Biography from the wikipedia article, licensed under CC-BY-SA

Peter Hall was Film Cameraman for several Doctor Who stories.

Worked on Elstree Britain's Hollywood, Bad Boyes, Arena, R.H.I.N.O.; Really Here in Name Only, Flying Into the Wind, Birth of a Nation, The Citadel, Dombey & Son, Made in Britain, The Day of the Triffids, The Hitch Hikers Guide to the Galaxy, Oppenheimer, Dr. Jekyll and Mr. Hyde, Thérèse Raquin, Rebecca, It Ain't Half Hot Mum, The Good Life, Ripping Yarns, The Two Ronnies, Chronicle, War & Peace, The Onedin Line, All in a Day, The Wednesday Play, Paul Temple, Omnibus, W. Somerset Maugham, Theatre 625, Adam Adamant Lives!, Out of the Unknown, Dixon of Dock Green, The Cockleshell Heroes, Up to His Neck, The Colditz Story, The Story of Robin Hood and His Merrie Men, Green Grow the Rushes, Prelude to Fame, Take My Life, Pulaski, Agatha Christie's Miss Marple: Sleeping Murder, Bergerac, Way Upstream, Call Me Mister, Lovejoy, Agatha Christie's Miss Marple: A Murder Is Announced, Shoestring, Hannah, Great Performances, BBC2 Playhouse, Horizon, Shoulder to Shoulder, Wessex Tales, War & Peace, Zinotchka, The Wednesday Play, Cold Comfort Farm