Young Digby
Man in Leamington Spa
Man with Souvenir Piece of Ice (uncredited)
Drunk Heckler
Uncle
Plain Clothes Policeman
Albert Speer
Dr. Meckridge
Ferris
Peter Audas
Hans Bauer
Roger Maxwell-Lafroy
Stevens
1st Young Man
1st Civil Defence Worker
Geoffrey
GNH Chairman
Harris
George Mullard
Hector Burrage
Dr. Roest
Tom Brooks
Colonel Jackson
Mr. Hayes
Colonel Foley
Harold Pusey
Tony Davis
Colonel Johnson
Kees Dorpman
Walter Machin
Lord Manley
Gerald Green
Man from Wimbledon
Mr. Bond
Colonel Northwood
Colonel Bosworth
Hailey
John Harvey
Plummer
Consultant
L'oncle