 | Shirley MacLaine als Harriet Blossom |
 | Richard Attenborough als Robert Blossom |
 | James Booth als Ambrose Tuttle |
 | Freddie Jones als Det. Sergeant Dylan |
 | William Rushton als Dylan's Assistant |
 | Bob Monkhouse als Dr. Taylor |
 | Patricia Routledge als Miss Reece |
 | John Bluthal als Judge |
 | Harry Towb als Doctor |
 | Sandra Caron als Pet Shop Assistant |
 | Sheila Steafel als Pet Shop Saleslady |
 | Frank Thornton als Factory Manager |
 | Barry Humphries als Mr. Wainwright |
 | John Cleese als Post Office Clerk |
 | Bruce Lacey als Musketeer |
| Tony Gray als Musketeer |
| Douglas Grey als Musketeer |
 | Leslie Dwyer als Bookshop Assistant |
 | Ronnie Brody als Security Guard |
 | Bob Godfrey als Factory Mechanic |
| John Mulgrew als Factory Mechanic |
| Marjorie Gresley als Post Office Lady |
| Freddie Earlle als Interpreter |
 | Marianne Stone als Factory Tea Lady |
 | Clive Dunn als Dr. Zimmerman |
| Geraldine Sherman als Dr. Krunhauser |
 | Julian Chagrin als Stockbroker |
| Keith Smith als Shop Steward |
| Alec Coppel | Theatre Play |
| Josef Shaftel | Producer |
| Joseph McGrath | Director |
| Joseph McGrath | Story |
| Geoffrey Unsworth | Director of Photography |
| Jocelyn Rickards | Costume Design |
| Assheton Gorton | Production Design |
| Ralph Sheldon | Editor |
| Fred Slark | Production Supervisor |
| David Hawkins | Sound Editor |
| Riz Ortolani | Original Music Composer |
| Riz Ortolani | Conductor |
| Alec Coppel | Screenplay |
| Denis Norden | Screenplay |
| Brian Elvin | Camera Operator |
| Peter MacDonald | Camera Operator |
| David Besgrove | Assistant Director |
| Maggie Unsworth | Continuity |
| Stan O'Toole | Producer's Assistant |
| Laurie Clarkson | Sound Recordist |
| Gerry Humphreys | ADR & Dubbing |
| George Lack | Art Direction |
| William Alexander | Art Direction |
| Terry Apsey | Construction Manager |
| Bridget Sellers | Wardrobe Supervisor |
| Trevor Crole-Rees | Makeup Artist |
| Bernadette Ibbetson | Hairdresser |
| Richard Parker | Special Effects |
| Sally Scott | Painter |
| Sidney King | Title Designer |
| Jack Jones | Songs |
| Norman Newell | Lyricist |
| Paul Hitchcock | Executive In Charge Of Production |
| Michael Guest | Second Assistant Director |
| Stuart Black | First Assistant Director |
| Sergio Strizzi | Still Photographer |
| Shirley MacLaine | Songs |
