| Person | Type | Job | Role(s) |
|---|---|---|---|
 Alex Vetchinsky | Crew | Art | Art Direction |
Barbara Ritchie | Crew | Costume & Make-Up | Hairdresser |
 Basil Dearden | Crew | Directing | Director |
Bert Batt | Crew | Directing | Assistant Director |
C. C. Stevens | Crew | Sound | Sound Recordist |
Denis Holt | Crew | Production | Production Manager |
 Dirk Bogarde | Crew | Writing | Writer |
Gordon K. McCallum | Crew | Sound | Sound Recordist |
Harry Frampton | Crew | Costume & Make-Up | Makeup Artist |
 Janet Green | Crew | Writing | Screenplay |
John D. Guthridge | Crew | Editing | Editor |
 Michael Relph | Crew | Production | Producer |
 Otto Heller | Crew | Camera | Director of Photography |
Philip Green | Crew | Sound | Music, Conductor |
Vernon Dixon | Crew | Art | Set Dresser |
John McCormick | Crew | Writing | Screenplay |
Les Wiggins | Crew | Sound | Sound Editor |
Joan Davis | Crew | Directing | Continuity |
H. A. R. Thomson | Crew | Camera | Camera Operator |
George Courtney Ward | Crew | Camera | Still Photographer |
 Alan Howard | Cast | Actor | Frank |
 Anthony Nicholls | Cast | Actor | Lord Charles Fullbrook |
 Basil Dignam | Cast | Actor | Barrister (uncredited) |
 Charles Lloyd Pack | Cast | Actor | Henry |
 Dennis Price | Cast | Actor | Calloway |
 Derren Nesbitt | Cast | Actor | Sandy |
Dirk Bogarde | Cast | Actor | Melville Farr |
 Donald Churchill | Cast | Actor | Eddy Stone |
Frank Pettitt | Cast | Barman (as Frank Pettit) | |
 Frank Thornton | Cast | Actor | George - Henry's Assistant (uncredited) |
 Hilton Edwards | Cast | Actor | P.H. |
 Jim Brady | Cast | Actor | Transport Cafe Patron (uncredited) |
 John Bennett | Cast | Actor | Undercover Detective (uncredited) |
 John Cairney | Cast | Actor | Bridie |
 Mavis Villiers | Cast | Actress | Madge |
 Nigel Stock | Cast | Actor | Phip |
 Noel Howlett | Cast | Actor | Patterson |
 Nora Gordon | Cast | Actress | Farr's Housekeeper (uncredited) |
 Norman Bird | Cast | Actor | Harold Doe |
 Peter Copley | Cast | Actor | Paul Mandrake |
 Peter McEnery | Cast | Actor | Jack Barrett |
 Sylvia Syms | Cast | Actress | Laura Farr |
 John Barrie | Cast | Actor | Inspector Harris |
 Alan MacNaughtan | Cast | Actor | Scott Hankin |
Dawn Beret | Cast | Sylvie | |
Margaret Diamond | Cast | Actress | Miss Benham |
David Evans | Cast | Mickey | |
Jack Taylor | Cast | Building Site Foreman (uncredited) | |
| Person | Type | Job | Role(s) |
