Terry-Thomas
Lord Henry Mayley
Peter Sellers
Sonny MacGregor
Peggy Mount
Flora Ransom
Shirley Eaton
Melissa Right
Dennis Price
Nigel Dennis
Georgina Cookson
Lady Lucy Mayley
Joan Sims
Ethel Ransom
Miles Malleson
Rev. Bastable
Kenneth Griffith
Porter
Bill Edwards
Bill Murphy
Wally Patch
Paunchy Old Man
Henry Hewitt
Gunsmith
John Stuart
Police Inspector
David Lodge
Policeman
Joan Hurley
Authoress
Peter Noble
T.V. Announcer
Victor Rietti
Doctor
Ronald Adam
Chemist (uncredited)
George Benson
Photographer (uncredited)
Tom Gill
Police Officer (uncredited)
Muriel Greenslade
Dinner Guest (uncredited)
Andy Ho
Chinese Man in Pub (uncredited)
Barry Keegan
2nd Irishman (uncredited)
Kenneth Kove
Man Who Lets Out Police Car's Tyre (uncredited)
Wilfrid Lawson
Walter - Contestant in T.V. Show (uncredited)
Arnold Marlé
Scientist (uncredited)
Edie Martin
Lady in Autograph Crowd (uncredited)
Gibb McLaughlin
Old Man in T.V. Show Audience (uncredited)
Marjorie Rhodes
Lady on Phone (uncredited)
Michael Ripper
J.E. Freeman - Greengrocer (uncredited)
Raymond Rollett
Pub Landlord (uncredited)
Austin Trevor
Minister with Heart Attack (uncredited)
Jerold Wells
1st Irishman (uncredited)