Norman Pitkin / Giulio Napolitani

Norman Wisdom

Rosanna Guardia

Jennifer Jayne

Sir Ronald Ackroyd

Raymond Huntley

Inspector Cecil Hobson

David Lodge

Mrs. Stammers

Esma Cannon

Doctor

Eric Barker

Outraged Hairdressers Customer (uncredited)

Wanda Ventham

Sergeant Lucilla Wilkins

Eleanor Summerfield

Oberon

Ronnie Stevens

Chief Superintendent Bert Belcher

Terence Alexander

Vince

Maurice Kaufmann

American Lady

Dilys Laye

Manzini

George Pastell

Police Sergeant

Jack Watson

Bollington

Campbell Singer

Man in Underground Train

Lionel Murton

Italian Lawyer

Robert Rietti

Italian Lawyer

Robert Rietty

Crying Lady

Marjie Lawrence

Guilio's Mother

Peggy Ann Clifford

Lady Hinchingford

Jean Aubrey

Chauffeur (uncredited)

John Blythe

Newspaper Seller

Mario Fabrizi

Mr. Bassett

Monte Landis

Trigger O'Flynn

Alfred Burke

Cafe Proprietor

Cyril Chamberlain

(uncredited)

Fredric Abbott

Hairdresser (uncredited)

Pauline Chamberlain

Constable (uncredited)

John Corrie

Receptionist (uncredited)

Heather Downham

Police Constable (uncredited)

Joe Dunne

Woman at Hairdressers (uncredited)

Eve Eden

Woman at Hairdressers (uncredited)

Mabel Etherington

Police Constable (uncredited)

Roy Everson

Wedding Guest (uncredited)

Ursula Granville

Cabbie (uncredited)

Fred Griffiths

Senior Policeman (uncredited)

Victor Harrington

Police Constable (uncredited)

Walter Henry

Man on Tube (uncredited)

Billy John

Billposter (uncredited)

Tutte Lemkow

Man on Tube (uncredited)

Jack Mandeville

Yob in Café (uncredited)

Larry Martyn

Police Constable / Man in Street (uncredited)

Colin McKenzie

Constable (uncredited)

Alan Meacham

Police Constable (uncredited)

Fred Nicholas

Wedding Photographer (uncredited)

Julian Orchard

Receptionist (uncredited)

Lisa Page

Police Sergeant (uncredited)

Pat Ryan

Woman at Hairdressers (uncredited)

Anita Sharp-Bolster

Police Driver (uncredited)

Jack Silk

Police Driver (uncredited)

Jeff Silk

Porter (uncredited)

Frank Singuineau

Man on Tube (uncredited)

John Smart

O'Flynn's Henchman (uncredited)

Larry Taylor

Man on Tube (uncredited)

Reg Thomason

Woman at Hairdressers (uncredited)

Valerie Van Ost

Man on Tube (uncredited)

Robert Vossler

Detective (uncredited)

Alister Williamson