Geoffrey Toone

as Cmdr. Clive Stanton

Judy Kelly

as Cynthia Maybridge

Kenneth Kent

as Col. Suvaroff

Clifford Evans

as Lt. Peel

John Wood

as Sub. Lt. Wing Eden

Daphne Raglan

as Dora Maybridge

Edmund Breon

as Adm. Maybridge

Doris Hare

as Mrs. Maybridge

Marguerite Allan

as Anna Suvaroff

Leslie Perrins

as Briggs

Olga Lindo

as Mrs. Rance

Frank Fox

as François

Alf Goddard

as Tomkins

Albert Burdon

as Noakes

Diana Beaumont

as Millie

Fred Emney

as Cook

Laurence Kitchin

Henry Oscar

as Cmdr. Perrin

Carla Lehmann

Michael Ripper

Nigel Stock

George Spence

as Henchman (uncredited)