| Michael Caine |
Charlie Croker |
| Noël Coward |
Mr. Bridger |
| Benny Hill |
Professor Peach |
| Ralf Vallone |
Altabani |
| Tony Beckley |
Camp Freddie |
| Rossano Brazzi |
Beckerman |
| Margaret Blye (as Maggie Blye) |
Lorna |
| Irene Handl |
Miss Peach |
| John Le Mesurier |
Governor |
| Fred Emney |
Birkenshaw |
| John Clive |
Garage Manager |
| Graham Payn |
Keats |
| Michael Standing |
Arthur |
| Stanley Caine |
Coco |
| Barry Cox |
Chris |
| Harry Baird |
Big William |
| George Innes |
Bill Bailey |
| John Forgeham |
Frank |
| Robert Powell |
Yellow |
| Derek Ware |
Rozzer |
| Frank Jarvis |
Roger |
| David Salamone |
Dominic |
| Richard Essome |
Tony |
| Mario Valgoi |
Manzo |
| Renato Romano |
Cosca |
| Franco Novelli |
Altabani's Driver |
| Robert Rietty |
Police Chief |
| Timothy Bateson |
Dentist |
| David Kelly |
Vicar |
| Arnold Diamond |
Senior Computer Room Official |
| Simon Dee |
Shirtmaker |
| Alastair Hunter (as Alistair Hunter) |
Warder (Cinema) |
| Lana Gatto |
Mrs. Cosca |
| John Morris |
Standin |
| Louis Mansi (as John Louis Mansi) |
Computer Room Official |
