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