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