Colin Dale as Nick Diamond

Dursley McLinden as Tim Diamond

Susannah York as Lauren Bacardi

Saeed Jaffrey as Mr. Patel

Patricia Hodge as Betty Charlady/Brenda von Falkenberg

Roy Kinnear as Jack Splendide

Jimmy Nail as Boyle

Bill Paterson as Chief Inspector Snape

Michael Robbins as The Fat Man

Peter Eyre as Gott

Nickolas Grace as Himmell

Michael Medwin as The Professor

Forbes Collins as Henry von Falkenberg

José René Ruiz as Johnny Naples (as Rene Ruiz)

Donald Standen as Lawrence

Jim McManus as Hammett

Robert Bathurst as Vicar

Jonathan Linsley as Bouncer

R.J. Bell as Club Owner

Jenny Tomasin as Traffic Warden

Joanna Dickens as Large Woman

Alison Ruffelle as Sales Girl

Auriol Goldingham as Sales Girl

Cristina Avery as Perturbed Mother

Charles Simon as Grandfather

Geraldine Muir as Granddaughter

Gerald Campion as Uncle Holly

Ricky Diamond as Harpoon Salesman

Mammoth as Fat Man's Henchman

John McCoy as Fatman's Henchman

Malcolm Baker as Fatman's Henchman

Nicky Moore as Fatman's Henchman

Vinnie Reed as Fatman's Hnechman

Mark White as Dog Walker