- Anton Walbrook
- Stefan 'Steve' Radetzky
- Sally Gray
- Carol Peters Radetzky
- Derrick De Marney
- Mike Carroll
- Cecil Parker
- Specialist
- Percy Parsons
- Bill Peters
- Kenneth Kent
- Andre De Guise
- J.H. Roberts
- - Dr. LonganResiding Physician
- Guy Middleton
- Whiskey
- John Laurie
- British Commander
- Frederick Valk
- Polish Bomber Commander
- O.B. Clarence
- Peters Family Butler
- James Pirrie
- (as James Perrie)
- Marian Spencer
- Miss Gratton
- Philip Friend
- Pete
- Michael Rennie
- Kapulski
- Charles Farrell
- First Cab Driver
- Robert Beatty
- Mac - Reporter with Carol
- Elwyn Brook-Jones
- Bit Part
- Tommy Duggan
- (uncredited)
- Gordon Glennon
- (uncredited)
- Cynthia Heppner
- (uncredited)
- Alan Keith
- (uncredited)
- John Lawson
- Undetermined Secondary Role
- Kay Lewis
- (uncredited)
- Conway Palmer
- (uncredited)
- Kent Stevenson
- (uncredited)
- William Taylor
- (uncredited)
