| John Cleese |
A. Sherlock-Holmes |
| Arthur Lowe |
Dr. W. Watson |
| Connie Booth |
Mrs. Hudson |
| Ron Moody |
Dr. Gropinger |
| Holly Palance |
Air Hostess |
| Joss Ackland |
President of the USA |
| Val Pringle |
Black CIA Man |
| Bill Mitchell |
Klein of the CIA |
| Christopher Malcolm (as Chris Malcolm) |
The Other CIA Man |
| Gyearbuor Asante (as Christopher Asante) |
African Delegate |
| Denholm Elliott |
English Delegate |
| Nick Tate |
1st Australian |
| Josephine Tewson |
Miss Hoskins |
| Burt Kwouk |
Chinese Delegate |
| Stratford Johns |
Chief Commissioner |
| Connie Booth |
Francine Moriarty |
| Derek Griffiths |
Bus Conductor |
| Billy Hamon |
Constable at Scotland Yard |
| Edmund Pegge |
2nd Australian |
| Robert Kingdom |
Intercom Man |
| Maria Charles |
Tea Lady |
| Delaney O'Connor |
Hotel Commissionaire |
| Moira Foot |
Receptionist |
| Dudley Jones |
Hercule Poirot |
| Luie Caballero |
Columbo |
| Kenneth Benda |
'M' |
| Charlotte Alexandra |
Miss Moneypacket |
| Maurice Kaufmann |
Steve McGarrett |
| Mike O'Malley |
Sam Spade |
| Paul Chapman |
McCloud |