On screen
Cast
43 credited performers
Jack Hawkins
Ericson
Donald Sinden
Lockhart
Denholm Elliott
Morell
John Stratton
Ferraby
Stanley Baker
Bennett
Liam Redmond
Watts
Meredith Edwards
Yeoman Wells
Bruce Seton
Tallow
John Warner
Baker
Barry Letts
Raikes
Gerard Heinz
Polish Captain
Fred Griffiths
Gracey
Glyn Houston
Phillips
Virginia McKenna
Julie Hallam
Megs Jenkins
Tallow's Sister
June Thorburn
Doris Ferraby
Moira Lister
Elaine Morell
Alec McCowen
Tonbridge
Artwork unavailable
Leo Phillips
Wainwright
Artwork unavailable
Dafydd Havard
Signalman Rose
Laurence Hardy
Sellars
Sam Kydd
Carslake
John Singer
Gray
Artwork unavailable
Barry Steele
Broughton
Artwork unavailable
Gerik Schjelderup
Norwegian Captain
Artwork unavailable
Gaston Richer
French Captain
Andrew Cruickshank
Scott Brown
Artwork unavailable
Kenn Kennedy
Allingham
Harold Goodwin
ASDIC Operator
George Curzon
Admiral at Party
Artwork unavailable
Anthony Snell
R.N. Lieutenant
Artwork unavailable
Ronald Simpson
R.N. Captain
Don Sharp
Lieutenant-Commander
Artwork unavailable
Herbert C. Walton
The Waiter
Artwork unavailable
Jack Howard
A Survivor
Russell Waters
A.R.P. Warden
Artwork unavailable
Harold Jamieson
A.R.P. Warden
Artwork unavailable
Warwick Ashton
Petty Officer Instructor
Walter Fitzgerald
Warden (uncredited)
Paddy Joyce
Sonar Operator (uncredited)
Richard Leech
Sailor (uncredited)
Jim Brady
Sailor in Water
Alan Webb
Admiral Murray-Forbes (uncredited)