Cast
Will Hay
Skipper
John Mills
Tom
Austin Trevor
U-boat Captain
John Boxer
Press
Cyril Chamberlain
Press
George Woodbridge
Quisling
Leslie Banks
Taylor
Marius Goring
German Propaganda Officer
Manning Whiley
Naval officer (uncredited)
Michael Rennie
George
Ronald Shiner
Shipping clerk (uncredited)
Alfred Drayton
Direktor
Albert Lieven
Gunter
Thora Hird
German barmaid (uncredited)
Frederick Piper
Malta official (uncredited)
Michael Wilding
Captain (uncredited)
John Stuart
Royal Navy: Naval Officer
Robert Morley
Von Geiselbrecht
Morland Graham
Civil Service
George Merritt
German: German Shelter Marshal
Ronald Adam
German businessman (uncredited)
Michael Redgrave
Russian
Bernard Miles
Royal Navy Mate
Frank Cellier
Schneider
John Williams
Voice over (uncredited)