Cast
-
Alec Guinness
as Professor Marcus
-
Cecil Parker
as Claude, alias 'Major Courtney'
-
Herbert Lom
as Louis, alias 'Mr. Harvey'
-
Peter Sellers
as Harry, alias 'Mr. Robinson'
-
Danny Green
as 'One-Round', alias 'Mr. Lawson'
-
Katie Johnson
as Mrs. Wilberforce
-
Jack Warner
as The Superintendent
- Philip Stainton as The Sergeant
-
Frankie Howerd
as The Barrow Boy
- Madge Brindley as Large Lady (uncredited)
- Hélène Burls as Hypatia (uncredited)
-
Kenneth Connor
as Cab Driver (uncredited)
- Michael Corcoran as Burglar (uncredited)
-
Harold Goodwin
as Parcels Clerk (uncredited)
-
Fred Griffiths
as Junk Man (uncredited)
-
Lucy Griffiths
as Miss Pringle (uncredited)
- George Hilsdon as Security Van Driver (uncredited)
- Vincent Holman as Station Master (uncredited)
Crew
-
Alexander Mackendrick
Director
-
Otto Heller
Director of Photography
- Jack Harris Editor
-
Tristram Cary
Original Music Composer
-
Michael Balcon
Producer
- William Rose Screenplay
