Michael Caine
Charlie Croker
Benny Hill
Professor Simon Peach
Franco Novelli
Altabani's Driver
Robert Rietti
Police Chief
Arnold Diamond
Senior Computer Room Official
Alastair Hunter
Cinema Warder
Louis Mansi
Computer Room Official
Hazel Collinson
Blonde Scrubber at Party
Lelia Goldoni
Mrs. Beckerman (uncredited)
Valerie Leon
Receptionist, Royal Lancaster