Guest Stars David Baukham as Desk Sergeant Liz Kettle as WPC Martin Clunes as James Balcombe Rupert Graves as Billy Alun Armstrong as Superintendent Holdsby Jamie Foreman as Chas Gwen Taylor as Margaret Cliff Charlotte Coleman as Jessica White Beryl King as Nottingham Lady John Styles as Punch & Judy Man Jane van Hool as Receptionist Mark Draper as Constable Sophie Uliano as Woman Journalist Dorian MacDonald as Constable Richard Ireson as Pathologist Andrew Ray as Alfred Rydale George Raistrick as Sir John Balcombe Anna Massey as Lady Emily Balcombe Daniel Mitchell as Journalist Two Sukie Smith as Lorraine Robert Demeger as Forensic Scientist Tony Guilfoyle as Journalist One Ralph Nossek as Professor Joshua Masterson Jonathan Coy as Harry Balcombe Uncredited Colin Dexter as Tramp Drinking from Bottle Near Mitre Pub