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