Characters played by Margaret Rutherford
Grand Duchess Gloriana XIII
Characters played by Ron Moody
Prime Minister Rupert Mountjoy
Characters played by Bernard Cribbins
Vincent Mountjoy
Characters played by David Kossoff
Professor Kokintz
Characters played by Terry-Thomas
Maurice Spender
Characters played by June Ritchie
Cynthia
Characters played by John Le Mesurier
British Delegate
Characters played by John Phillips
Bracewell - U.S. Delegate
Characters played by Eric Barker
M.I.5. Man
Characters played by Roddy McMillan
Benter
Characters played by Tom Aldredge
Wendover
Characters played by Michael Trubshawe
British Aide
Characters played by Peter Sallis
Russian Delegate
Characters played by Clive Dunn
Bandleader
Characters played by Hugh Lloyd
Plumber
Characters played by Graham Stark
Standard Bearer
Characters played by Mario Fabrizi
Mario - the Valet
Characters played by Jan Conrad
Russian Aide
Characters played by John Bluthal
Von Neidel
Characters played by Archie Duncan
U.S.A.F. General
Characters played by Guy Deghy
Russian Scientist
Characters played by Richard Marner
Russian Air Force General
Characters played by Allan Cuthbertson
Member of Whitehall Conference
Characters played by Robin Bailey
Member of Whitehall Conference
Characters played by Gerald Andersen
Member of Whitehall Conference
Characters played by Gordon Phillott
Civil Sergeant
Characters played by John Wood
Countryman
Characters played by George Chisholm
Wine Waiter
Characters played by Rosemary Scott
Launching Lady
Characters played by Vincent Ball
Pilot
Characters played by Frank Duncan
News Announcer
Characters played by Ed Bishop
American Astronaut
Characters played by Bill Edwards
American Astronaut
Characters played by Laurence Herder
Russian Astronaut
Characters played by Harvey Hall
Russian Astronaut
Characters played by Frankie Howerd
Self
Characters played by Beverly Bennett
(uncredited)
Characters played by Paul Beradi
Ukraine Delegate
Characters played by Ernest Blyth
Dignatory at Ship Launching
Characters played by Michael Caspi
(uncredited)
Characters played by Paul Cole
(uncredited)
Characters played by Larry Cross
(uncredited)
Characters played by Victor Croxford
Valet
Characters played by George Curtis
Councillor
Characters played by Stringer Davis
1st Councillor
Characters played by Charles Dyer
Bit part
Characters played by Lucy Griffiths
Lady-in-Waiting
Characters played by Sandra Hampton
April
Characters played by Robert Haynes
(uncredited)
Characters played by Murray Kash
(uncredited)
Characters played by Frederick Kelsey
Fenwickian
Characters played by Bruce Lacey
Bandleader
Characters played by Anthony Lang
Councillor
Characters played by Frank Lieberman
American Civilian
Characters played by Martin Lyder
Fenwickian
Characters played by Jack Mandeville
Representative at United Nations
Characters played by Coral Morphew
Peasant Girl
Characters played by Carolyn Pertwee
June
Characters played by Stuart Saunders
Sergeant
Characters played by Kevin Scott
American Journalist
Characters played by George Spence
Man in Market
Characters played by Reg Thomason
Opposition MP
Characters played by Fred Wood
Bird Seller