John Mills as Pat Reid

Eric Portman as Colonel Richmond

Frederick Valk as Kommandant

Denis Shaw as Priem

Lionel Jeffries as Harry Tyler

Christopher Rhodes as 'Mac' McGill

Richard Wattis as Richard Gordon

Ian Carmichael as Robin Cartwright

Bryan Forbes as Jimmy Winslow

Theodore Bikel as Vandy

Eugene Deckers as La Tour

Anton Diffring as Hauptmann Fischer

Guido Lorraine as Polish officer

Witold Sikorski as Polish Officer

A. Blichewicz as Polish Officer

B. Dolinski as Polish Officer

Leo Bieber as German Interpreter

Rudolph Offenbach as Dutch Colonel

Keith Pyott as French Colonel

Arthur Butcher as Polish Colonel

David Yates as Dick

Carl Duering as

Ludwik Lawinski as

Peter Swanwick as

John G. Heller as

Guy Deghy as