- Malcolm McDowell
- Mick Travis / Plantation Thief
- Ralph Richardson
- Sir James Burgess / Monty
- Rachel Roberts
- Gloria Rowe / Madame Paillard / Mrs. Richards
- Arthur Lowe
- Mr. Duff / Charlie Johnson / Dr. Munda
- Helen Mirren
- Patricia Burgess / Casting Assistant
- Graham Crowden
- Stewart / Prof. Millar / Meths Drinker
- Peter Jeffrey
- Factory Chairman / Prison Governor
- Dandy Nichols
- Tea Lady / Neighbour
- Mona Washbourne
- Neighbour / Usher / Sister Hallett
- Philip Stone
- Jenkins / Interrogator / Salvation Army Major
- Mary MacLeod
- Mary Ball / Salvationist / Vicar's Wife (as Mary Macleod)
- Michael Bangerter
- William / Interrogator / Assistant / Released Prisoner
- Wallas Eaton
- John Stone (Coffee Factory) / Col. Steiger / Prison Warder / Meths Drinker / Film Executive
- Warren Clarke
- Master of Ceremonies (Nightspot) / Warner / Male Nurse
- Bill Owen
- Supt. Barlow / Insp. Carding
- Michael Medwin
- Army Captain / Power station Technician / Duke of Belminster
- Vivian Pickles
- Good Lady
- Geoffrey Palmer
- Examination Doctor / Basil Keyes
- Geoffrey Chater
- Bishop / Vicar
- Anthony Nicholls
- General / Judge
- Brian Glover
- Plantation Foreman / Bassett (Power Station Guard)
- Edward Judd
- Oswald
- Pearl Nunez
- Mrs. Naidu
- Jeremy Bulloch
- Young Man / Sportscar Driver / Sandwichboard Man
- David Daker
- Policeman at Accident / Man at Stag Party / Munda's Manservant / Policeman at Tenement
- Edward Peel
- Policeman at Accident / Power Station Guard / Policeman in Court
- Alan Price
- Alan Price
- Colin Green
- Guitar
- Clive Thacker
- Tolly (drums)
- Dave Markee
- Bass Guitarist
- Ian Leake
- Streaky (roadie)
- Bart Allison
- (as Bart Alison)
- Ben Aris
- Mr. MacIntyre / Dr. Hyder / Flight Lt. Wallace
- John Barrett
- Bill
- Margot Bennett
- Coffee Picker
- James Bolam
- Attenborough / Examination Doctor
- Constance Chapman
- Lady Burgess
- Alan Cullen
- (as Allen Cullen)
- Paul Dawkins
- Plantation Judge / Man at Stag Party / Meths Drinker
- Anna Dawson
- Becky
- Geoffrey Hinsliff
- (as Geoff Hinsliff)
- Patricia Lawrence
- Clinic Receptionist / Miss Hunter
- Christine Noonan
- Coffee Trainee / Mavis (Girl at Stag Party)
- Kenneth Oxtoby
- (as Ken Oxtoby)
- Brian Pettifer
- Laurence Biles
- Peter Schofield
- Tax Inspector / Club Waiter
- David Sterne
- (as David Stern)
- Adele Strong
- Elizabeth Valerie Stewart / Tenement Neighbor
- Hugh Thomas
- Coffee Salesman / Pickpocket
- Glenn Williams
- Mr. Spalding / Doctor / Pickpocket / Meths Drinker
- Catherine Willmer
- Dr. Houston
- Lindsay Anderson
- Film Director
- Jill Goldston
- Passerby
- Patricia Healey
- Hotel Receptionist
- Anthony Lang
- Tramp
- Rachelle Miller
- Succubus
- Philip Stewart
- Gentlemans Club Member
- Reg Thomason
- Man in Nightclub
- Kate Williams
- Unknown
- Fred Wood
- Tramp
