Michael Caine as Charlie Croker

Noël Coward as Mr. Bridger

Benny Hill as Professor Simon Peach

Margaret Blye as Lorna

Raf Vallone as Altabani

Tony Beckley as Camp Freddie

Rossano Brazzi as Beckerman

Irene Handl as Miss Peach

John Le Mesurier as Governor

Fred Emney as Birkinshaw

John Clive as Garage Manager

Graham Payn as Keats

Michael Standing as Arthur

Stanley Caine as Coco

Barry Cox as Chris

Robert Powell as Yellow

Harry Baird as Big William

George Innes as Bill Bailey

John Forgeham as Frank

Derek Ware as Rozzer

Frank Jarvis as Roger

David Salamone as Dominic

Richard Essome as Tony

Mario Valgoi as Manzo

Renato Romano as Cosca

Franco Novelli as Altabani's Driver

Robert Rietti as Police Chief

Timothy Bateson as Dentist

David Kelly as Vicar

Arnold Diamond as Senior Computer Room Official

Simon Dee as Shirtmaker

Alastair Hunter as Cinema Warder

Lana Gatto as Mrs. Cosca

Louis Mansi as Computer Room Official

Hazel Collinson as Blonde Scrubber at Party

Henry McGee as Tailor

Lelia Goldoni as Mrs. Beckerman (uncredited)

Valerie Leon as Receptionist, Royal Lancaster