 | Dirk Bogarde als Charlie Hook |
 | Margaret Leclere als Elsa (as Margaret Brooks) |
 | Pamela Franklin als Diana |
 | Louis Sheldon Williams als Hubert |
 | John Gugolka als Dunston |
 | Mark Lester als Jiminee |
 | Phoebe Nicholls als Gerty (as Sarah Nicholls) |
 | Gustav Henry als Willy |
| Parnum Wallace als Louis |
 | Yootha Joyce als Mrs. Quayle |
| Claire Davidson als Miss Bailey |
 | Anthony Nicholls als Mr. Halbert |
 | Annette Carell als Mother |
 | Edina Ronay als Doreen |
| Diana Ashley als Girl Friend |
 | Garfield Morgan als Mr. Moley |
 | Faith Kent als Woman Client |
 | John Arnatt als Man Client |
| Jack Silk als Motor Cyclist |
| Haya Harareet | Screenplay |
| Jeremy Brooks | Screenplay |
| Georges Delerue | Original Music Composer |
| Larry Pizer | Director of Photography |
| Ian Whittaker | Set Decoration |
| Jack Clayton | Director |
| Julian Gloag | Novel |
| Tom Priestley | Editor |
| Jack Clayton | Producer |
| Ken Ritchie | Sound Recordist |
| Ken Goodman | Assistant Camera |
| Reece Pemberton | Art Direction |
| Terry Rawlings | Sound Editor |
| Bill Lodge | Makeup Artist |
| Martin Ransohoff | Executive Producer |
| Roy Baird | Associate Producer |
| Peter Katin | Musician |
| Dennis C. Lewiston | Camera Operator |
| Harry Benn | Production Controller |
| Claude Watson | Assistant Director |
| Jeanie Sims | Script Editor |
| Pamela Davies | Continuity |
| Terry Apsey | Construction Manager |
| Sue Yelland | Wardrobe Designer |
| Olga Angelinetta | Hairdresser |
| Grania O'Shannon | Second Assistant Director |
| David MacDonald | Assistant Camera |
| Dick Savory | Grip |
| John Salter | Boom Operator |
| Rex Pyke | Assistant Editor |
| Hazel Harste | Assistant Sound Editor |
