Crew
WR
William Rose
Screenplay
Otto Heller
Director of Photography
Alexander Mackendrick
Director
Michael Balcon
Producer
Tristram Cary
Original Music Composer
Cast
Alec Guinness
Professor Marcus
Cecil Parker
Claude, alias 'Major Courtney'
Herbert Lom
Louis, alias 'Mr. Harvey'
Peter Sellers
Harry, alias 'Mr. Robinson'
Danny Green
'One-Round', alias 'Mr. Lawson'
Katie Johnson
Mrs. Wilberforce
Jack Warner
The Superintendent
PS
Philip Stainton
The Sergeant
Frankie Howerd
The Barrow Boy
MB
Madge Brindley
Large Lady (uncredited)
HB
Hélène Burls
Hypatia (uncredited)
Kenneth Connor
Cab Driver (uncredited)
