 | Bonar Colleano als Dan MacDonald |
 | Susan Shaw als Pat |
 | Renée Asherson als Sally |
 | Earl Cameron als Johnny Lambert |
 | Moira Lister als Maisie |
 | Max Adrian als Charlie Vernon - acrobat / George |
 | Joan Dowling als Pamela, Maisie's sister |
 | James Robertson Justice als Engine Room Officer Trotter |
 | Leslie Phillips als Harry |
 | Alfie Bass als Alf |
 | John Longden als DI Williams |
 | Michael Golden als Customs Officer Andrews |
 | Christopher Hewett als Mike |
| John Adams |
 | John Arnatt |
| Mae Bacon |
 | Ian Bannen |
 | George Benson |
| Arthur Bentley |
| Beckett Bould |
| John Boxer |
| Michael Corcoran |
| Dan Cressey |
| David Davies |
| Frank Forsyth |
| Rowena Gregory |
| Fred Griffiths |
| Pat Hagan |
| Ellis Irving |
 | Sam Kydd |
 | Howard Lang |
 | Victor Maddern |
 | Jack May |
 | George Merritt |
 | Arthur Mullard |
 | Laurence Naismith |
| Jack Sharp |
 | Campbell Singer |
| George Spence |
| Ivan Staff |
| Eric Thompson |
| Frederick Treves |
 | Mavis Villiers |
 | Michael Ward |
 | John Warwick |
 | Russell Waters |
| Meadows White |
| Basil Dearden | Director |
| John Eldridge | Screenplay |
| Jack Whittingham | Screenplay |
| Michael Balcon | Producer |
| Gordon Dines | Director of Photography |
| Peter Tanner | Editor |
| Anthony Mendleson | Costume Design |
| Jean Graham | Script Supervisor |
| Chic Waterson | Camera Operator |
| Sydney Pearson | Special Effects |
| Lionel Banes | Additional Director of Photography |
| Arthur Bradburn | Sound Recordist |
| Jim Morahan | Art Direction |
| John Addison | Original Music Composer |
| Michael Relph | Associate Producer |
| Barbara Barnard | Hairdresser |
| Harry Frampton | Makeup Artist |
| Ernest Taylor | Makeup Artist |
