Guest Stars Pooky Quesnel as Louise Wilson Leon Harrop as Ralph Wilson Matt Greenwood as Tom Clarke Adam Wittek as David Nowak Tommie Grabiec as Pavel Kaminski Daniel Cerqueira as Dr. Graves George Bukhari as Terry Norris Craig McDonald-Kelly as Gary Mallard Thomas Gregory as Luke Taylor Ralf Little as Stuart Julia Krynke as Maya Petrenko Luke Roskell as Dan Adam Kotz as Inspector Bob Herd Christine Mackie as Mrs. Fox Sara Sadeghi as Miss Rees Lee Lomas as PC Laing