- Marty Feldman
- Teddy
- Judy Cornwell
- Liz
- Garry Miller
- Richard
- Shelley Berman
- Nat Kaplan / Kaplan
- Hy Hazell
- Mrs. Kaplan
- Julie Ege
- Inga
- Penelope Keith
- Lotte
- Moray Watson
- Chandler
- Jack Watson
- McLaughlin
- Mark Elwes
- Rokes
- Harold Innocent
- Jimpson
- Dinsdale Landen
- Rev. Geoffrey Mellish
- John McKelvey
- Col. Belper
- Charles Lewsen
- Arthur Soames
- Maggie Jones
- Hetty Soames
- Ellis Dale
- Leonard Crape
- Frances de la Tour
- Maud Crape
- Patrick Cargill
- Wallace Trufitt M.P.
- Patience Collier
- Mrs. Monty Levin
- Ray Fell
- Goldilocks Presenter
- Annabel Leventon
- Chandler's Secretary
- Mischa De La Motte
- Trufitt's Manservant
- Veronica Clifford
- Hot Dog Girl
- Diana Quiseekay
- Elvira
- Vicki Hodge
- Pippa
- Sarah Badel
- Joanna Snow
- John Wells
- Tolworth
- Michael Bates
- Magistrate
- John Hamill
- Porridge Eater
- Robert Farrant
- Porridge Eater
- Kenny Rodway
- Porridge Eater
- Dave Dee
- Wednesday Play Star
- Judy Huxtable
- Frankenstein Heroine
- Rose Hill
- Shopping Woman
- Winnie Holman
- Shopping Woman
- Bernard Sharpe
- Shopping Man
- Roland Curram
- Arthur And Mario
- David Hutcheson
- Stockbroker
- Jack Arrow
- TV Show Audience
- Ann Barrass
- TV Show Audience
- Roy Beck
- Passer by
- Alan Bennett
- Defence Solicitor
- Erika Bergmann
- Hildegarde
- John Bindon
- Party Guest
- Willy Bowman
- Church Choir & Congregation
- Carol Cleveland
- Suzy
- Fiona Curzon
- (uncredited)
- Eden Fox
- Church Choir & Congregation
- Geraldine Gardner
- Girl
- Robert Gillespie
- Porridge film director
- Sheila Gish
- Mother in TV Commercial
- Christopher Godwin
- Magistrates' Clerk
- Ned Hood
- Church Choir & Congregation
- David Lee
- Ern
- James Payne
- Taxi Driver with the Dwarfs
- Ian Selby
- TV Show Audience
- Marianne Stone
- TV Production Assistant #1
