Claude Hulbert as Llewellyn Davies, 'The Admiral'

Michael Wilding as Johnny

Carla Lehmann as Jane

Tommy Trinder as Tommy Taylor

Jeanne De Casalis as Mrs. Pilkington

Henry Hewitt as Prof. Pilkington

John Laurie as McNab

James Hayter as Hans

Brian Fitzpatrick as Digby

Harold Warrender as Pilot's Mate

Eric Clavering as Bartender

John Glyn-Jones as Best Man

Julian Vedey as Resident of Tangier

John Wengraf as German Captain

Manning Whiley as German Commdr.

Victor Fairley as German Petty Officer

Robert Rendel as British Captain

Allan Jeayes as British Commdr.

Alec Clunes as British Pilot

Derek Elphinstone as British Observer

Jonny Bloor as Minor Role (uncredited)

Harold Coyne as Sailor (uncredited)

E. V. H. Emmett as Newsreel Commentator (voice)

Danny Green as Nightclub Bouncer (uncredited)

Bryan Herbert as Petty Officer on HMS Ferocious (uncredited)

Olaf Olsen as Minor Role (uncredited)

Tao Porchon as Minor Role (uncredited)

Johnnie Schofield as Officer Reading Heliograph Message (uncredited)