Guest Stars Sam Stockman as DC Emerson Kent Claire Rushbrook as Dr. Caroline Llewellyn Ben Bishop as DC Finley Mansell George Rossi as DC John McCormack Alex Jennings as Commander Anderson Peter Serafinowicz as DCI Torbin Cazenove Steve Nicolson as Jack Cheshire Mark Flitton as Barman Sol Cross Daniel Percival as DS Christopher Cedra Charlie Covell as Blond Boy Craig Parkinson as Johnny Kray Craig Parkinson as Jimmy Kray Andrew Tiernan as Steven Dukes Andy Beckwith as Grave Maurice Regular Chrissie Cotterill as Angie Brooks Trevor Michael Georges as Custody Sergeant Daniel York as Steve from Liverpool Samantha Best as Jeanie McCormack