| Person | Type | Job | Role(s) |
|---|---|---|---|
 Anthony Mendleson | Crew | Costume & Make-Up | Costume Designer |
Bill Lenny | Crew | Editing | Editor |
Dudley Messenger | Crew | Sound | Sound Recordist |
George Blackler | Crew | Costume & Make-Up | Makeup Artist |
John Howell | Crew | Art | Production Design |
Leonard Wibberley | Crew | Writing | Novel |
 Maurice Binder | Crew | Art | Title Designer |
Michael Pertwee | Crew | Writing | Screenplay |
R. E. Dearing | Crew | Production | Production Manager |
 Richard Lester | Crew | Directing | Director |
 Ron Grainer | Crew | Sound | Music |
Roy Hyde | Crew | Sound | Sound Editor |
Stella Rivers | Crew | Costume & Make-Up | Hairdresser |
Walter Shenson | Crew | Production | Producer |
Wilkie Cooper | Crew | Camera | Director of Photography |
William Alexander | Crew | Art | Assistant Art Director |
Kelvin Pike | Crew | Camera | Camera Operator |
Bill Daniels | Crew | Sound | Sound Recordist |
Eileen Head | Crew | Directing | Continuity |
Ross MacKenzie | Crew | Directing | Assistant Director |
Trevor Bond | Crew | Visual Effects | Animation |
Laurel Staffell | Crew | Costume & Make-Up | Wardrobe Master |
 Allan Cuthbertson | Cast | Actor | Member of Whitehall Conference |
 Archie Duncan | Cast | Actor | U.S.A.F. General |
 Bernard Cribbins | Cast | Actor | Vincent Mountjoy |
 Clive Dunn | Cast | Actor | Bandleader |
 David Kossoff | Cast | Actor | Professor Kokintz |
 Ed Bishop | Cast | Actor | American Astronaut |
 Eric Barker | Cast | Actor | M.I.5 Man |
 Frankie Howerd | Cast | Actor | Self |
Gordon Phillott | Cast | Actor | Civil Sergeant |
 Graham Stark | Cast | Actor | Standard Bearer |
 Guy Deghy | Cast | Actor | Russian Scientist |
 Harvey Hall | Cast | Actor | Russian Astronaut |
 Hugh Lloyd | Cast | Actor | Plumber |
Jan Conrad | Cast | Russian Aide | |
 John Bluthal | Cast | Actor | Von Neidell |
 John Le Mesurier | Cast | Actor | British Delegate |
 John Phillips | Cast | Actor | Bracewell - U.S. Delegate |
 John Wood | Cast | Actor | Countryman |
 June Ritchie | Cast | Actress | Cynthia |
 Laurence Herder | Cast | Actor | Russian Astronaut |
 Margaret Rutherford | Cast | Actress | Grand Duchess Gloriana XIII |
 Michael Trubshawe | Cast | Actor | British Aide |
 Peter Sallis | Cast | Actor | Russian Delegate |
 Richard Marner | Cast | Actor | Russian Air Force General |
 Robin Bailey | Cast | Actor | Member of Whitehall Conference |
 Roddy McMillan | Cast | Actor | Benter |
 Ron Moody | Cast | Actor | Prime Minister Rupert Mountjoy |
 Stringer Davis | Cast | Actor | 1st Councillor (uncredited) |
 Terry-Thomas | Cast | Actor | Maurice Spender |
 Tom Aldredge | Cast | Actor | Wendover |
 Vincent Ball | Cast | Actor | Pilot |
 Bill Edwards | Cast | American Astronaut | |
 Mario Fabrizi | Cast | Actor | Mario - the Valet |
 Lucy Griffiths | Cast | Actress | Lady-in-Waiting (uncredited) |
Frank Duncan | Cast | Actor | News Announcer |
Gerald Andersen | Cast | Member of Whitehall Conference | |
| Person | Type | Job | Role(s) |
