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 Ofo Uhiara Guest Star Larry Lamb Guest Star Joanna Horton Guest Star Julian Simpson Director Ben Richards Writer Simon Crawford-Collins Executive Producer Jane Featherstone Executive Producer