| Person | Type | Job | Role(s) |
|---|---|---|---|
 Anthony Mendleson | Crew | Costume & Make-Up | Costume Design |
 Charles Frend | Crew | Directing | Director |
Edward Carrick | Crew | Art | Art Direction |
Gerard Schurmann | Crew | Sound | Original Music Composer |
Gordon Dines | Crew | Crew | Cinematography, Director of Photography |
Gordon Stone | Crew | Editing | Editor |
Harry Frampton | Crew | Costume & Make-Up | Makeup Artist |
 Janet Green | Crew | Writing | Screenplay |
 Michael Balcon | Crew | Production | Producer |
Robert Barr | Crew | Writing | Screenplay |
Thomas N. Morahan | Crew | Production | Associate Producer |
Daphne Martin | Crew | Costume & Make-Up | Hairstylist |
Roy Gough | Crew | Camera | Still Photographer |
 Alec McCowen | Cast | Actor | House Surgeon |
Anthony Richmond | Cast | Actor | |
Arthur Howell | Cast | Actor | |
 Arthur Rigby | Cast | Actor | Detective Inspector at Chester |
Barry Keegan | Cast | Actor | Detective Constable in Hospital Ward |
Charles Rayford | Cast | Actor | |
David Davies | Cast | Actor | Welsh Police Constable |
 David Lodge | Cast | Actor | Detective at Car Lot (uncredited) |
 Dorothy Alison | Cast | Actress | Mary Halliday |
Edward Cast | Cast | Actor | |
 Frazer Hines | Cast | Actor | Urchin (uncredited) |
Fred Davis | Cast | ||
Fred Griffiths | Cast | Actor | |
Frederick Treves | Cast | Actor | Detective tailing Creasey (uncredited) |
 Geoffrey Keen | Cast | Actor | Chief Superintendent Jim Malcolm |
 George Rose | Cast | Actor | Slob |
 Glyn Houston | Cast | Actor | Detective Sergeant in 'Q' car |
 Harold Goodwin | Cast | Actor | Official at Somerset House |
 Harry Locke | Cast | Actor | Secondhand Dealer |
 Ian Bannen | Cast | Actor | The Young Workman - Stanley James |
 Jack Hawkins | Cast | Actor | Supt Tom Halliday |
 Jack McNaughton | Cast | Actor | |
John Paul | Cast | Actor | |
 John Stratton | Cast | Actor | Sergeant Ward |
 John Warwick | Cast | Actor | Detective Inspector at Shipping Office |
 John Welsh | Cast | Actor | House Agent at Shepperton |
 Joss Ambler | Cast | Actor | Cashier at Shipping Office |
 Martin Wyldeck | Cast | Actor | Officer in Criminal Records Department (uncredited) |
Maureen Davis | Cast | Actress | The Young Workman's Wife - Mrs. James |
 Maureen Delaney | Cast | Actress | Mrs. Stevens, the daily help |
Meadows White | Cast | Actor | |
 Meredith Edwards | Cast | Actor | Mr. Thomas |
Michael Brooke | Cast | Actor | Tony Halliday |
Michael Collins | Cast | Actor | |
Newton Blick | Cast | Deputy Commander | |
 Nicholas Parsons | Cast | Actor | Police Constable Bates |
 Peter Burton | Cast | Actor | Creasey |
Peter Welch | Cast | Actor | CID Man (uncredited) |
 Ralph Truman | Cast | Actor | Colonel Blenkinsop |
 Richard Davies | Cast | Actor | Detective (uncredited) |
 Richard Leech | Cast | Actor | Nightwatchman / Gilson |
Robert Gregory | Cast | ||
Robert Moor | Cast | Actor | |
Roy Purcell | Cast | Actor | |
 Sam Kydd | Cast | Actor | Police Constable in Information Room |
 Stratford Johns | Cast | Actor | Constable (uncredited) |
 Sydney Tafler | Cast | Actor | Stone |
 Ursula Howells | Cast | Actress | Mrs. Elliot / Mrs. Gilson |
 Vincent Ball | Cast | Actor | P.C. at Hospital (uncredited) |
 William Mervyn | Cast | Actor | Manager of Festival Hall |
Patrick Halpin | Cast | Actor | |
 Jameson Clark | Cast | Actor | Detective Superintendent Ogilvie |
Dennis Carnell | Cast | ||
John Wilder | Cast | Actor | |
 Guy Standeven | Cast | Actor | Detective (uncredited) |
Jack Dearlove | Cast | ||
Lindsay Hooper | Cast | ||
Pat Ryan | Cast | ||
Warwick Ashton | Cast | Actor | Newspaper Circulation Manager |
Julie Milton | Cast | Welsh Newsagent's Daughter | |
Colin McKenzie | Cast | ||
Philip Stewart | Cast | ||
Sonnie Wills | Cast | ||
Gillian Webb | Cast | Housewife at Shepperton | |
Aidan Harrington | Cast | ||
Fred Nicholas | Cast | ||
George Holdcroft | Cast | ||
| Person | Type | Job | Role(s) |
