Dripper Daniels
Richard Attenborough
Lt. Richard Jennings, No. 1
James Donald
Petty Officer Martin
Patric Doonan
Ned Hardy, Landlord Golden Bull
Sid James
Adm. Bartlett
Harold Siddons
Crewman
William Russell
June Mallory, WRNS cypher officer
Joan Rice
Commander C.E. Spencer
Peter Bathurst
Yank Flanagan
Sonny Tufts
Lt. Cmdr Hugh Alginon Fraser
Trevor Howard
A.S. 'Stripey' Wood
Bernard Lee
Glad Flanagan
Dora Bryan
Captain David G. Wilson
Hugh Williams
Lt. Michael Grant, Pilot
Robin Bailey
Jones
Meredith Edwards
Appleby the Captain's Steward
John Forrest
Adaptation
William Rose
Director
Compton Bennett
Screenplay
William Fairchild
Hugh Hastings
Story
Ivan Goff
Ben Roberts
Music
Clifton Parker
Director of Photography
Harry Waxman
Editor
Alan Osbiston
Art Direction
Edward Carrick
Special Effects
Cliff Richardson
Sound Editor
Jack Slade
Camera Operator
James Bawden
Script Supervisor
Ann Forsyth
Sound Recordist
Peter Handford
Red Law