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
Director of Photography
Harry Waxman
Special Effects
Cliff Richardson
Music
Clifton Parker
Screenplay
William Fairchild
Editor
Alan Osbiston
Sound Editor
Jack Slade
Camera Operator
James Bawden
Script Supervisor
Ann Forsyth
Story
Ben Roberts
Hugh Hastings
Ivan Goff
Art Direction
Edward Carrick
Sound Recordist
Red Law
Peter Handford