- Roddy McMillan - Benter
- Tom Aldredge - Wendover
- Michael Trubshawe - British Aide
- Peter Sallis - Russian Delegate
- Clive Dunn - Bandleader
- Hugh Lloyd - Plumber
- Graham Stark - Standard Bearer
- Mario Fabrizi - Mario - the Valet
- Jan Conrad - Russian Aide
- John Bluthal - Von Neidell
- Archie Duncan - U.S.A.F. General
- Guy Deghy - Russian Scientist
- Richard Marner - Russian Air Force General
- Allan Cuthbertson - Member of Whitehall Conference
- Robin Bailey - Member of Whitehall Conference
- Gerald Andersen - Member of Whitehall Conference
- Gordon Phillott - Civil Sergeant
- John Wood - Countryman
- George Chisholm - Wine Waiter
- Vincent Ball - Pilot
- Frank Duncan - News Announcer
- Ed Bishop - American Astronaut
- Bill Edwards - American Astronaut
- Laurence Herder - Russian Astronaut
- Harvey Hall - Russian Astronaut
- Frankie Howerd - Self
- Stringer Davis - 1st Councillor (uncredited)
- Lucy Griffiths - Lady-in-Waiting (uncredited)
-
Richard Lester
-
Michael Pertwee
-
Walter Shenson
Capítulo disponible en las siguientes plataformas:
