| Person | Type | Job | Role(s) |
|---|---|---|---|
 Douglas Gamley | Crew | Sound | Original Music Composer |
 Freddie Young | Crew | Camera | Director of Photography |
John Creasey | Crew | Writing | Novel |
 John Ford | Crew | Directing | Director |
 Ken Adam | Crew | Art | Art Direction |
Raymond Poulton | Crew | Editing | Editor |
T. E. B. Clarke | Crew | Writing | Screenplay |
Wingate Smith | Crew | Production | Associate Producer |
Michael Killanin | Crew | Production | Producer |
Bill Kirby | Crew | Production | Production Supervisor |
Charles Nash | Crew | Costume & Make-Up | Makeup Artist |
 Andrew Ray | Cast | Actor | PC Simon Farnaby-Green |
 Anna Lee | Cast | Actress | Mrs. Kate Gideon |
 Anna Massey | Cast | Actress | Sally Gideon |
Barry Keegan | Cast | Actor | Riley |
Brian Smith | Cast | Actor | White-Douglas |
 Cyril Cusack | Cast | Actor | Herbert 'Birdie' Sparrow |
David Aylmer | Cast | Manners | |
 Derek Bond | Cast | Actor | Det. Sgt. Eric Kirby |
 Dervis Ward | Cast | Actor | Simmo |
 Dianne Foster | Cast | Actress | Joanna Delafield |
 Donal Donnelly | Cast | Actor | Feeney |
 Frank Lawton | Cast | Actor | Det. Sgt. Liggot |
Henry B. Longhurst | Cast | Actor | Rev. Mr. Courtney |
 Howard Marion-Crawford | Cast | Actor | The Chief |
 Jack Hawkins | Cast | Actor | Insp. George Gideon |
 Jack Watling | Cast | Actor | Rev. Julian Small |
 James Hayter | Cast | Actor | Mason |
 Joan Ingram | Cast | Actress | Lady Bellamy |
 John Le Mesurier | Cast | Actor | Barrister |
 John Loder | Cast | Actor | Ponsford 'The Duke' |
 Laurence Naismith | Cast | Actor | Arthur Sayer |
 Marjorie Rhodes | Cast | Actress | Mrs. Saparelli |
Maureen Potter | Cast | Actress | Mrs. Ethel Sparrow |
 Michael Shepley | Cast | Actor | Sir Rupert Bellamy |
 Michael Trubshawe | Cast | Actor | Sergeant Golightly |
 Miles Malleson | Cast | Actor | The Judge |
 Ronald Howard | Cast | Actor | Paul Delafield |
Grizelda Hervey | Cast | Mrs. Kirby | |
| Person | Type | Job | Role(s) |
