David Farrar as Sammy Rice

Kathleen Byron as Susan

Jack Hawkins as R.B. Waring

Leslie Banks as Col. A. K. Holland

Michael Gough as Capt. Dick Stuart

Cyril Cusack as Cpl. Taylor

Milton Rosmer as Prof. Mair

Walter Fitzgerald as Brine

Emrys Jones as Joe

Michael Goodliffe as Till

Renée Asherson as A.T.S. corporal

Anthony Bushell as Col. Strang

Henry Caine as Sgt. Maj. Rose

James Dale as Brigadier

Robert Morley as The Minister

Sid James as 'Knucksie' Moran

Sam Kydd as Crowhurst

Geoffrey Keen as Pinker

June Elvin as

Roddy Hughes as Welsh Doctor

Bryan Forbes as Peterson

Roderick Lovell as

Elwyn Brook-Jones as

James Carney as

John Stratton as Young Army Officer