"Wartime propaganda piece reporting on the success of the economic blockade of Germany in the early years of the war."
Leslie Banks
as Taylor
Michael Redgrave
as Russian
Will Hay
as Skipper
John Mills
as Tom
Bernard Miles
as Royal Navy Mate
Michael Rennie
as George
Frank Cellier
as Schneider
Robert Morley
as Von Geiselbrecht
Alfred Drayton
as Direktor
Marius Goring
as German Propaganda Officer
Austin Trevor
as U-boat Captain
Albert Lieven
as Gunter
Leif Konow
as Dane
Charles Frend
Director
Ernest Irving
Music Director
Michael Balcon
Producer
Compton Bennett
Editor
Charles Crichton
Angus MacPhail
Screenplay
Roy Kellino
Special Effects
Thomas N. Morahan
Art Direction
Douglas Slocombe
Director of Photography
Richard Addinsell
Original Music Composer
Wilkie Cooper