Guest Stars Keith Allen as Det Supt Alan Horsefell Richard Lynch as PC Peters Guy Williams as Laurence Payne Shirley King as Muriel Dumont (PCA) Alun Armstrong as Det Supt Frank Burroughs Robert Blythe as Chief Inspector Price Gillian Eaton as Maureen Fry Ian Rowlands as PC Pratley Jenny Downham as Jane Whitehouse Martin Troakes as Chief Superintendent Jones David Ryall as Sir Cyril Llewellyn (DPP) Dudley Sutton as Deputy Commissioner Sir Harry Streeter Mike Hayward as Supt Williams Tom Marshall as Det Insp Bill Senior Derek Hutchinson as Sgt. Keeper Brinley Jenkins as Chief Constable Maurice Probert Clyde Pollitt as Dep Chief Constable Donald Preece Alan Devlin as Sir Rex Ferriday (MI6) Roger Brierley as Julian Brind Keith Barron as Cmdr Jack Bentham