| Person | Type | Job | Role(s) |
|---|---|---|---|
 Howard Dimsdale | Crew | Writing | Screenplay |
 Wendy Toye | Crew | Directing | Director |
John Winton | Crew | Writing | Novel |
 Alexis Kanner | Cast | Actor | Garrett |
 Andrew Cruickshank | Cast | Actor | Admiral Filmer |
 Andrew Sachs | Cast | Actor | Short-Changed US Seaman |
Arthur Lovegrove | Cast | Actor | C.P.O. Froud |
 Brian Wilde | Cast | Actor | Petty Officer Gilors |
 David Warner | Cast | Actor | Sailor Painting Ship (uncredited) |
 Derek Fowlds | Cast | Actor | Carson |
 Dinsdale Landen | Cast | Actor | The Midshipman/Bowles |
 Dirk Bogarde | Cast | Actor | Dr. Simon Sparrow (uncredited) |
 Esma Cannon | Cast | Actress | Consul's Wife |
 Graham Crowden | Cast | Actor | Naval Officer (uncredited) |
 Jeremy Lloyd | Cast | Actor | The Midshipman/Dewberry |
 Joan O'Brien | Cast | Actress | Lt. Carol Blair |
 John Le Mesurier | Cast | Actor | George Dewberry Sr. |
 John Phillips | Cast | Actor | Rear Admiral |
 Kenneth Griffith | Cast | Actor | Orator |
 Kenneth More | Cast | Actor | Lt. Cmdr. Robert Badger |
Lally Bowers | Cast | Actress | Mrs. Dewberry |
 Laurence Naismith | Cast | Actor | Admiral Blake |
 Lloyd Nolan | Cast | Actor | Vice Admiral Ryan |
Michael Kilgarriff | Cast | Actor | Claude |
 Mischa Auer | Cast | Actor | Colonel & President |
Nicholas Stuart | Cast | Actor | Captain Hurley U.S.N. |
 Paul Maxwell | Cast | Actor | Commander Spelling U.S.N. |
 Richard Vernon | Cast | Actor | Government Official at Enquiry (uncredited) |
 Robert Cawdron | Cast | Actor | Marcel's Bar Patron (uncredited) |
 Robert Nichols | Cast | Actor | Bill |
 Robin Hawdon | Cast | Actor | Williams |
 Rodney Bewes | Cast | Actor | Recruitment Interviewee (uncredited) |
 Ronald Leigh-Hunt | Cast | Actor | Commander R.N. |
 Sid James | Cast | Actor | Dance Instructor |
 Tutte Lemkow | Cast | Actor | Corporal |
 Walter Fitzgerald | Cast | Actor | Admiral Thomas |
 Wanda Ventham | Cast | Actress | Dartmouth Girl |
 Warren Mitchell | Cast | Actor | 'Honest' Marcel |
 Neil McCarthy | Cast | Actor | Sergeant |
Bill Hibbert | Cast | Actor | Revolutionary (uncredited) |
 John Barrard | Cast | Actor | Consul |
 Guy Standeven | Cast | Actor | American Naval Officer (uncredited) |
 Michael Bentine | Cast | Actor | Psychologist |
Marie France Dousset | Cast | Françoise | |
Peter Brace | Cast | Actor | Leather Jacket Rebel (uncredited) |
Sean Kelly | Cast | Simpson | |
Ian Selby | Cast | Actor | Shocked Man in Cafe (uncredited) |
| Person | Type | Job | Role(s) |
