| Person | Type | Job | Role(s) |
|---|---|---|---|
 Arthur Alcott | Crew | Crew | Production Controller |
 Basil Dearden | Crew | Directing | Director |
 Carmen Dillon | Crew | Art | Art Direction |
Dickie Bamber | Crew | Art | Standby Property Master |
Dudley Messenger | Crew | Sound | Sound Recordist |
 Earl St. John | Crew | Production | Executive Producer |
Harry Waxman | Crew | Camera | Director of Photography |
 Janet Green | Crew | Writing | Writer |
John D. Guthridge | Crew | Editing | Editor |
 Julie Harris | Crew | Costume & Make-Up | Costume Design |
Lukas Heller | Crew | Crew | Additional Dialogue |
 Michael Relph | Crew | Production | Producer |
Philip Green | Crew | Sound | Music |
W.T. Partleton | Crew | Costume & Make-Up | Makeup Artist |
 John Dankworth | Crew | Sound | Musician |
Tilly Day | Crew | Directing | Continuity |
Arthur Ridout | Crew | Sound | Sound Editor |
H. A. R. Thomson | Crew | Camera | Camera Operator |
Bill Daniels | Crew | Sound | Sound Recordist |
Harry Fairbairn | Crew | Sound | Sound Assistant |
David W. Orton | Crew | Directing | Assistant Director |
 Barbara Steele | Cast | Actress | Student |
 Bartlett Mullins | Cast | Actor | Newsagent |
 Basil Dignam | Cast | Actor | Doctor Burgess |
 Bernard Miles | Cast | Actor | Ted Harris |
Christopher Witty | Cast | Actor | Boy |
 Dan Jackson | Cast | Actor | Nightclub Owner |
 Desmond Llewelyn | Cast | Actor | Police Constable |
 Dorothy Gordon | Cast | Actress | Lily |
 Earl Cameron | Cast | Actor | Dr. Robbins |
 Fenella Fielding | Cast | Actress | Lingerie Shop Manageress |
 Freda Bamford | Cast | Actress | Sgt. Cook |
 Gordon Heath | Cast | Actor | Paul Slade |
 Grace Arnold | Cast | Actress | Sapphire's Landlady |
 Harry Baird | Cast | Actor | Johnnie Fiddle |
Joan Hooley | Cast | Woman in Street | |
Jocelyn Britton | Cast | Patsy | |
 John Richardson | Cast | Actor | Student |
 Lloyd Reckord | Cast | Actor | Pianist in International Club |
 Michael Craig | Cast | Actor | Inspector Phil Learoyd |
 Nigel Patrick | Cast | Actor | Superintendent Robert Hazard |
 Nora Gordon | Cast | Actress | Newsagent's Wife |
 Olga Lindo | Cast | Actress | Mrs. Harris |
 Orlando Martins | Cast | Actor | Barman |
 Paul Massie | Cast | Actor | David Harris |
 Peter Vaughan | Cast | Actor | Detective Whitehead (uncredited) |
 Philip Ray | Cast | Actor | Mr. Young |
 Richard Vernon | Cast | Actor | Doctor at Crime Scene |
 Robert Adams | Cast | Actor | Horace Big Cigar |
 Rupert Davies | Cast | Actor | Ferris |
 Thomas Baptiste | Cast | Actor | Man on the Street |
 Vanda Hudson | Cast | Actress | Girl at Tulip Club |
 Victor Brooks | Cast | Actor | Police Sgt. |
 Yvonne Buckingham | Cast | Actress | Sapphire Robbins |
 Yvonne Mitchell | Cast | Actress | Mildred |
 Dolores Mantez | Cast | Actress | Student (International Club) |
 Lucy Griffiths | Cast | Actress | Johnnie Fiddle's Landlady |
 Susan Stranks | Cast | Student | |
 Philip Lowrie | Cast | Actor | Student |
Geremy Phillips | Cast | Youth | |
 Boscoe Holder | Cast | Actor | Dancer in Nightclub |
| Person | Type | Job | Role(s) |
