Michael Caine
Charlie Croker
Noël Coward
Mr. Bridger
Benny Hill
Professor Simon Peach
Margaret Blye
Lorna
Raf Vallone
Altabani
Tony Beckley
Camp Freddie
Rossano Brazzi
Beckerman
Irene Handl
Miss Peach
John Le Mesurier
Governor
Fred Emney
Birkinshaw
John Clive
Garage Manager
Graham Payn
Keats
Michael Standing
Arthur
Stanley Caine
Coco
Barry Cox
Chris
Robert Powell
Yellow
Harry Baird
Big William
George Innes
Bill Bailey
John Forgeham
Frank
Derek Ware
Rozzer
Frank Jarvis
Roger
David Salamone
Dominic
Richard Essome
Tony
Mario Valgoi
Manzo
Renato Romano
Cosca
Franco Novelli
Altabani's Driver
Robert Rietti
Police Chief
Timothy Bateson
Dentist
David Kelly
Vicar
Arnold Diamond
Senior Computer Room Official
Simon Dee
Shirtmaker
Alastair Hunter
Cinema Warder
Lana Gatto
Mrs. Cosca
John Louis Mansi
Computer Room Official
Hazel Collinson
Blonde Scrubber at Party
Henry McGee
Tailor
Lelia Goldoni
Mrs. Beckerman (uncredited)
Valerie Leon
Receptionist, Royal Lancaster