Guest Stars David Baukham as Desk Sergeant Liz Kettle as WPC Alun Armstrong as Superintendent Holdsby Rupert Graves as Billy Martin Clunes as James Balcombe Gwen Taylor as Margaret Cliff Anna Massey as Lady Emily Balcombe 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 Daniel Mitchell as Journalist Two Sukie Smith as Lorraine Robert Demeger as Forensic Scientist Tony Guilfoyle as Journalist One Jamie Foreman as Chas Ralph Nossek as Professor Joshua Masterson Jonathan Coy as Harry Balcombe Uncredited Colin Dexter as Tramp Drinking from Bottle Near Mitre Pub