George Cole
George Archibald Potts
Acting
Oskar Homolka
Zekov
Acting
Nadia Gray
Tania
Acting
Wilfrid Hyde-White
Sir Hubert Wells
Acting
Richard Wattis
Barnes
Acting
Irene Handl
Mrs. Tidmarsh
Acting
Christopher Lee
Russian Agent (uncredited)
Acting
Frederick Leister
Prime Minister
Acting
Frederick Valk
Rakov
Acting
Geoffrey Sumner
Pike
Acting
Ronald Adam
Barworth Controller
Acting
Edwin Styles
Barworth Superintendent
Acting
Kynaston Reeves
Barworth Director
Acting
Ernest Jay
Professor Layton
Acting
Michael Medwin
Smedley
Acting
Henry Hewitt
Minister of Health
Acting
Walter Horsbrugh
1st Cabinet Minister
Acting
Anthony Shaw
2nd Cabinet Minister
Acting
Tim Turner
1st Reporter
Acting
Gibb McLaughlin
Schoolmaster
Acting
Michael Balfour
Jersey Sailor
Acting
Hal Osmond
Jersey Waiter
Acting
Charles Goldner
Gaston
Acting
Ronnie Stevens
Aubrey
Acting
Eleanor Summerfield
Cecilia
Acting
Phyllis Morris
Mrs. Tweedy
Acting
Myrtle Reed
Jersey Air Hostess
Acting
Ina De La Haye
Madame
Acting
David Hurst
Deutsch
Acting
Bernard Rebel
Trubiev
Acting
Olaf Pooley
Roblettski
Acting
Guido Lorraine
1st M.V.D.
Acting
Terence Alexander
2nd M.V.D.
Acting
Richard Marner
Russian Sentry
Acting
Martin Boddey
Russian Security Officer
Acting
Gerard Heinz
Russian Director of Plant
Acting
Fred Berger
Russian Doctor
Acting
Victor Maddern
British N.C.O.
Acting
Reed De Rouen
1st U.S. Soldier
Acting
Johnny Catcher
2nd U.S. Soldier
Acting
Willoughby Gray
British Officer
Acting
Anton Diffring
Border Police GDR (uncredited)
Acting