George Baker

Prof. Gottlieb

Felicity Devonshire

Cathy

Anna Bergman

Suzy

Suzy Mandel

Erica

Heather Deeley

Marion

Peter Blake

John

Queenie Watts

John's mother

Hugh Lloyd

John's father

Ian Hendry

Uncle Rodney

Chet Townsend

Nick

Johnny Vyvyan

Jockey

Joyce Blair

Beryl

Monika Ringwald

Naked secretary

Norman Chappell

Principal

Lindy Benson

Blonde wife (as Linda Benson)

Forbes Collins

Squire

Claire Davenport

Fat stripper

Mary Millington

Choir Girl (uncredited)

Edward Kalinski

Benny

Maria St. Clare

June

Martin Neil

Joe

Barbara Eatwell

Pigeon girl

Jonathan David

Interrogator

John Benson

Executive

Dudley Stevens

Prisoner

Normaline

Hazel (the maid)

Susan Glanville

Frustrated housewife

Guy Standeven

Psychiatrist

Steve Amber

Imaginary lover

Peppi Borza

Dancer

John Melainey

Dancer

Roger Finch

Dancer

Michael Clarke

Gay Motorist (uncredited)