| Person | Type | Job | Role(s) |
|---|---|---|---|
 A.W. Watkins | Crew | Sound | Sound Recordist |
 Anatole de Grunwald | Crew | Writing | Screenplay, Producer |
 Anthony Asquith | Crew | Directing | Director |
Benjamin Frankel | Crew | Crew | Compositor, Music |
Bill Lodge | Crew | Costume & Make-Up | Makeup Artist |
 Christian Dior | Crew | Costume & Make-Up | Costume Design |
David Middlemas | Crew | Directing | Assistant Director |
Frank Clarke | Crew | Editing | Editor |
Gerry Turner | Crew | Sound | Sound Recordist |
 Irene Howard | Crew | Production | Casting |
J.B. Smith | Crew | Sound | Sound Mixer |
Joan Johnstone | Crew | Costume & Make-Up | Hairstylist |
 Karl Tunberg | Crew | Writing | Screenplay |
Paul Sheriff | Crew | Art | Art Direction |
Pierre Rouve | Crew | Production | Associate Producer |
Robert Krasker | Crew | Crew | Cinematography |
Roy Parkinson | Crew | Production | Executive In Charge Of Production |
Tom Howard | Crew | Visual Effects | Visual Effects |
Robert Carrick | Crew | Sound | Sound Editor |
Maurice Fowler | Crew | Art | Set Dresser |
 Anthony Dawson | Cast | Actor | Gerald Loddon |
 Arthur Howard | Cast | Actor | Car Salesman |
Barbara Archer | Cast | Actress | Barmaid |
 Bill Shine | Cast | Actor | The Guide |
 Dirk Bogarde | Cast | Actor | Sir Mark Loddon / Frank Welney / Number Fifteen |
 Geoffrey Bayldon | Cast | Actor | Second Photographer |
 Gordon Sterne | Cast | Actor | Maddox |
 Ivan Samson | Cast | Admiral Loddon | |
 Josephine Middleton | Cast | Actress | Mrs. Squire |
 Joyce Carey | Cast | Actress | Miss Sykes |
 Kenneth Griffith | Cast | Actor | Fitch |
 Martin Miller | Cast | Actor | Dr. Schrott |
 Millicent Martin | Cast | Actress | Maisie |
 Olivia de Havilland | Cast | Actress | Lady Margaret Anne Loddon |
 Paul Massie | Cast | Actor | Jeffrey Buckenham |
 Richard Pearson | Cast | Actor | The Butler |
 Richard Wattis | Cast | Actor | The Judge |
 Robert Morley | Cast | Actor | Sir Wilfred |
 Robert Shaw | Cast | Actor | First Photographer |
 Sam Kydd | Cast | Actor | Newspaper Vendor (uncredited) |
 Sebastian Saville | Cast | Actor | Michael Loddon |
Tony Doonan | Cast | Actor | Man at Bar |
 Vanda Hudson | Cast | Actress | Girl in Street |
 Wilfrid Hyde-White | Cast | Actor | Hubert Foxley |
 Toke Townley | Cast | Actor | Associate |
 Victor Harrington | Cast | Actor | Barrister (uncredited) |
 Richard Dimbleby | Cast | Himself | |
Reg Thomason | Cast | Actor | Barrister (uncredited) |
Deering Wells | Cast | Actor | Editor |
| Person | Type | Job | Role(s) |
