cast
- Alec Guinness
- Capt. Crawford
- Dirk Bogarde
- Lt. Scott-Padget
- Anthony Quayle
- Vizard
- Tom Bell
- Evans
- Maurice Denham
- Surgeon Goss
- Victor Maddern
- Dawlish
- Walter Fitzgerald
- Adm. Jackson
- Murray Melvin
- Wagstaffe
- Nigel Stock
- Senior Midshipman Kilpatrick
- Johnny Briggs
- Wheatley
- Richard Carpenter
- Lt. Ponsonby
- Bryan Pringle
- Sgt. Kneebone
- Joy Shelton
- Mrs. Crawford
- David Robinson
- Harvey Crawford
- Michael Coles
- Flag Lieutenant
- Brian Phelan
- Grimshaw
- Toke Townley
- "Silly Billy" Whiting
- Russell Napier
- Flag Captain
- Ray Brooks
- Hayes
- Ann Lynn
- Young Wife
- Declan Mulholland
- Morrison
- Peter Greenspan
- Johnson
- Anthony Oliver
- Tavern Leader
- Robin Stewart
- Pardoe
- Andre Maranne
- Col. Giraud
crew
- Lewis Gilbert
- Director
- Lord John Brabourne
- Producer
- Edmund H. North
- Screenwriter
- Frank Tilsley
- Book Author
- Nigel Kneale
- Screenwriter
- Christopher G. Challis
- Cinematographer
- Clifton Parker
- Composer (Music Score)
- Peter Hunt
- Editor
- Arthur Lawson
- Art Director
- Terence Morgan II
- Set Designer
- Ernie Sullivan
- Special Effects
- Howard Lydecker
- Special Effects
