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