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

Michael Standing

Arthur

Robert Powell

Yellow

Harry Baird

Big William

George Innes

Bill Bailey

John Forgeham

Frank

Derek Ware

Rozzer

Mario Valgoi

Manzo

Renato Romano

Cosca

Robert Rietti

Police Chief

Timothy Bateson

Dentist

David Kelly

Vicar

Arnold Diamond

Senior Computer Room Official

Alastair Hunter

Cinema Warder

Louis Mansi

Computer Room Official

Henry McGee

Tailor

Lelia Goldoni

Mrs. Beckerman (uncredited)

Valerie Leon

Receptionist, Royal Lancaster