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