Michael Redgrave
— Capt. Karel Hasek
Rachel Kempson
— Celia Mitchell
Frederick Leister
— Mr. Mowbray
Mervyn Johns
— Pte. Evans
Rachel Thomas
— Mrs. Evans
Jack Warner
— Cpl. Ted Horsfall
Gladys Henson
— Mrs. Horsfall
James Harcourt
— Doctor
Gordon Jackson
— Lt. David Lennox
Elliott Mason
— Mrs. Lennox
Margot Fitzsimons
— Elspeth McDougall
David Keir
— Mr. McDougall
Derek Bond
— Lt. Stephen Harley
Jane Barrett
— Caroline Harley
Meriel Forbes
— Beryl Curtiss
Robert Wyndham
— Lt. Cdr. Robert Marsden
Basil Radford
— Major Ossy Dalrymple
Guy Middleton
— Capt. Jim Grayson
Jimmy Hanley
— Pte. Mathews
Ralph Michael
— Capt. Thurston R.A.M.C.
Jack Lambert
— Padre
Karl Stepanek
— Forster
Friedrich Richter
— Camp Commandant
Frederick Schiller
— German Medical Officer
Jill Gibbs
— Janet Mitchell
David Walbridge
— Desmond Mitchell
Grace Arnold
— Official (uncredited)
William Fox
— Officer Interviewing Capt. Hasek (uncredited)
Susanne Gibbs
— Girl (uncredited)
Sam Kydd
— POW in Top Bunk (uncredited)