Peter Sellers as John Lewis

Mai Zetterling as Liz

Virginia Maskell as Jean Lewis

Raymond Huntley as Vernon

John Le Mesurier as Salter

Richard Attenborough as Gareth L. Probert

Marie Devereux as Girl Playing Tennis

Kenneth Griffith as Ieuan Jenkins

David Davies as Benyon

Maudie Edwards as Mrs. Edna Davies

Meredith Edwards as Clergyman on the Committee

Frederick Piper as Mr. Davies

Graham Stark as Hyman

Eynon Evans as Town Hall Clerk

John Arnatt as Bill

Sheila Manahan as Mrs. Jenkins

Frances Bennett as Amorous Woman in Mobile Library

Eve Eden as Girl Playing Tennis

Howell Evans as Library Policeman

Tenniel Evans as Kennedy

Howard Greene as Chauffeur

Ronnie Harries as Night Porter

Victor Harrington as Man in Pub

Damaris Hayman as Lady Committee Member

Margaret Lacey as 1st Pianist

Marjie Lawrence as Girl in Bus

Desmond Llewelyn as Clergyman on Bus

Charles Lloyd Pack as Committee Member

Meg Wynn Owen as Dilys

John Rees as Bus Conductor

Gerald Sim as Cigarette Thief at Party

Gillian Vaughan as Maureen

George Woodbridge as Farmer