Gary Oldman Jackson Lamb Actor Kristin Scott Thomas Diana Taverner Actor Jack Lowden River Cartwright Actor Saskia Reeves Catherine Standish Actor Rosalind Eleazar Louisa Guy Actor Christopher Chung Roddy Ho Actor Aimee-Ffion Edwards Shirley Dander Actor Kadiff Kirwan Marcus Longridge Actor Jonathan Pryce David Cartwright Actor Graham Yost Executive Producer James Hawes Executive Producer Will Smith Executive Producer Douglas Urbanski Executive Producer Gail Mutrux Executive Producer Iain Canning Executive Producer Emile Sherman Executive Producer Jamie Laurenson Executive Producer Julian Stevens Executive Producer Jane Robertson Executive Producer Hakan Kousetta Executive Producer Adam Randall Director Mark Denton Writer Will Smith Writer Jonny Stockwood Writer