Guest Stars Mark Dexter as Timothy Gray Steven Robertson as Malcolm Crowley Ed Birch as Harry Jocelyn Macnab as Claire Michael Gould as Deputy Commissioner Wainwright Elliot Kerley as Sam Anastasia Hille as Angela Simon Williams as Cavendish John Lightbody as Sergeant George Thomasin Rand as Mary Matthew Cullum as Constable Barry Joanna Brookes as Mrs. Cross Simon Sherlock as DCI Compton Co Starring Kieran Bew as Clerk on Train Angela Curran as Woman
