Richard Attenborough

Dripper Daniels

James Donald

Lt. Richard Jennings, No. 1

Sonny Tufts

Yank Flanagan

Trevor Howard

Lt. Cmdr Hugh Alginon Fraser

Bernard Lee

A.S. 'Stripey' Wood

Dora Bryan

Glad Flanagan

Hugh Williams

Captain David G. Wilson

Robin Bailey

Lt. Michael Grant, Pilot

Meredith Edwards

Jones

John Forrest

Appleby the Captain's Steward

Patric Doonan

Petty Officer Martin

Sid James

Ned Hardy, Landlord Golden Bull

Harold Siddons

Adm. Bartlett

William Russell

Crewman

Joan Rice

June Mallory, WRNS cypher officer

Compton Bennett