Peter Firth Harry Pearce Actor Hugh Simon Actor Nicola Walker Ruth Evershed Actor Rupert Penry-Jones Adam Carter Actor Miranda Raison Jo Portman Actor Hermione Norris Ros Myers Actor Raza Jaffrey Zafar Younis Actor Anna Chancellor Juliet Shaw Actor Gugu Mbatha-Raw Actor James Dicker Actor John Castle Guest Star Roger Allam Guest Star Steve Nicolson Guest Star Shaheen Khan Guest Star John Elmes Guest Star Nicholas Jones Guest Star Robert Glenister Guest Star Omar Madha Director Ben Richards Writer Simon Crawford-Collins Executive Producer Jane Featherstone Executive Producer