Jimmy Edwards
— Harris
Laurence Harvey
— George
David Tomlinson
— J
Shirley Eaton
— Sophie Clutterbuck
Lisa Gastoni
— Primrose Porterhouse
Jill Ireland
— Primrose Porterhouse
Campbell Cotts
— Ambrose Porterhouse
Martita Hunt
— Mrs. Willis
Adrienne Corri
— Clara Willis
Joan Haythorne
— Mrs. Porterhouse
Noelle Middleton
— Ethelbertha
Charles Lloyd Pack
— Mr. Quilp
Robertson Hare
— Photographer
Kenneth Williams
— Maze Attendant (uncredited)
A.E. Matthews
— 1st Old Gentleman
Miles Malleson
— 2nd Old Gentleman
Ernest Thesiger
— 3rd Old Gentleman
Norman Rossington
— Boy Lover
Esma Cannon
— Meek Woman (Maze)
Pat Lanski
— Woman Pianist
Christian Duvaleix
— Man Pianist
Mark Hashfield
— Bowler (Cricket Match)
Graham Curnow
— Captain (Cricket Match)
Stuart Saunders
— Dad (Henley Regatta)
Margaret St. Barbe West
— Mum (Henley Regatta)
Shane Cordell
— Girl Lover
Alice Bowes
— Auntie
Oswald Laurence
— Cocky Young Man
Rhett Ward
— Man in Sailing Dinghy
George Woodbridge
— Policeman