Terry-Thomas

Character: Lord Henry Mayley

Peter Sellers

Character: "Wee" Sonny MacGregor

Peggy Mount

Character: Flora Ransom

Shirley Eaton

Character: Melissa Right

Dennis Price

Character: Nigel Dennis

Georgina Cookson

Character: Lady Lucy Mayley

Joan Sims

Character: Ethel Ransom

Miles Malleson

Character: Reverend Cedric "Daddy Bassy" Bastable

Kenneth Griffith

Character: Porter

Bill Edwards

Character: Bill Murphy

Wally Patch

Character: Fred

Henry Hewitt

Character: Gunsmith

John Stuart

Character: Police Inspector

David Lodge

Character: PC Johnson

Joan Hurley

Character: Désirée Mensch aka D. Mandeville

Peter Noble

Character: TV announcer

Victor Rietti

Character: Dr Harz

Ronald Adam

Character: Chemist (uncredited)

George Benson

Character: Photographer (uncredited)

Tom Gill

Character: Police Officer (uncredited)

Muriel Greenslade

Character: Dinner Guest (uncredited)

Andy Ho

Character: Chinese Man in Pub (uncredited)

Barry Keegan

Character: 2nd Irishman (uncredited)

Kenneth Kove

Character: Man Who Lets Out Police Car's Tyre (uncredited)

Wilfrid Lawson

Character: Walter - Contestant in T.V. Show (uncredited)

Arnold Marlé

Character: Scientist (uncredited)

Edie Martin

Character: Lady in Autograph Crowd (uncredited)

Gibb McLaughlin

Character: Old Man in T.V. Show Audience (uncredited)

Marjorie Rhodes

Character: Lady on Phone (uncredited)

Michael Ripper

Character: J.E. Freeman - Greengrocer (uncredited)

Raymond Rollett

Character: Pub Landlord (uncredited)

Austin Trevor

Character: Minister with Heart Attack (uncredited)

Jerold Wells

Character: 1st Irishman (uncredited)