Peter Firth Harry Pearce Actor Hugh Simon Malcolm Wynn-Jones Actor Nicola Walker Ruth Evershed Actor Rupert Penry-Jones Adam Carter Actor Rory MacGregor Colin Wells Actor Olga Sosnovska Fiona Carter Actor Raza Jaffrey Zafar Younis Actor Anna Chancellor Juliet Shaw Actor Miranda Raison Jo Portman Actor James Dicker Wesley Carter Actor Margot Leicester Auntie May Guest Star Steven Pacey Peregrine Howell-Davis MP Guest Star Mark Flitton Brian Thorn Guest Star David Threlfall Keith Moran Guest Star Rupert Graves William Sampson Guest Star Alrick Riley Director Ben Richards Writer Simon Crawford-Collins Executive Producer Jane Featherstone Executive Producer Lucy Richer Executive Producer Julie Scott Executive Producer