Frank Lawton
— Gerald Conway
Penelope Dudley-Ward
— Mrs. Conway
Milton Rosmer
— Major Brett
Margaret Vyner
— Pearl
Roland Culver
— Officer
Robert Rendel
— Minor Role
Alec Clunes
— Minor Role
Ian Fleming
— Official
Edward Lexy
— Percival
Roddy Hughes
— Charlie
Patrick Holt
— Channing
John Wengraf
— German Radio Operator