Keith Barron
— Commander Jack Bentham
Alun Armstrong
— Det. Supt. Frank Burroughs
Tom Marshall
— Det. Insp. Bill Senior
Dudley Sutton
— Dep. Commissioner Sir Harry Streeter
Gillian Eaton
— Maureen Fry
Keith Allen
— Det. Supt. Alan Horsefell
Brinley Jenkins
— Chief Constable Maurice Probert
Clyde Pollitt
— Dep. Chief Constable Donald Preece
David Ryall
— Sir Cyril Llewellyn
Alan Devlin
— Sir Rex Ferriday
Shirley King
— Muriel Dumont
Robert Blythe
— Chief Insp. Price
Martin Troakes
— Chief Supt. Jones
Bernard Latham
— Supt. I.D. Parade
Richard Harrington
— Kit Davis
Roger Brierley
— Julian Brind
Derek Hutchinson
— Sgt. Hooper
Guy Williams
— Lawrence Payne
Jenny Downham
— Jane Whitehouse
Mike Hayward
— Supt. Williams
Richard Lynch
— PC Maurice Peters
Ian Rowlands
— PC Kevin Pratley
Jane Phillips
— Angela Fry
Becca Parry Jones
— Kathleen Fry
Richard Vatsaloo
— Stephen Fry
Stephen K. Amos
— Floyd
Roger Nott
— Detective
Lynette Edwards
— Staff Nurse
David Lever
— Reporter
Russell Gomer
— Cardiff Driver