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Jon Pertwee as The Doctor |
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Caroline John as Liz Shaw |
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Nicholas Courtney as Brigadier Lethbridge-Stewart |
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Hugh Burden as Channing |
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Hamilton Dyce as Major General Scobie |
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Antony Webb as Dr. Henderson |
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Neil Wilson as Seeley |
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Talfryn Thomas as Mullins |
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John Breslin as Captain Munro |
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John Woodnutt as Hibbert |
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Derek Smee as Ransome |
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Henry McCarthy as Dr. Beavis |
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Betty Bowden as Meg |
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Allan Mitchell as Wagstaffe |
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Robin Squire as Auton Scount / UNIT Driver |
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David Dewhurst as Private Hawkins |
| Directing | Derek Martinus | Director |
| Writing | Robert Holmes | Writer |
| Production | Derrick Sherwin | Producer |
| Editing | Bill Symon | Editor |
| Editing | Adam Dawson | Editor |
| Costume & Make-Up | Christine Rawlins | Costume Design |
| Visual Effects | John Horton | Visual Effects |
| Sound | Dudley Simpson | Original Music Composer |
| Sound | Delia Derbyshire | Theme Song Performance |
| Writing | Terrance Dicks | Script Editor |
| Production | Peter Grimwade | Production Assistant |
| Art | Paul Allen | Production Design |