Guest Stars Saskia Reeves as Catherine Standish Christopher Chung as Roddy Ho Rosalind Eleazar as Louisa Guy Aimee-Ffion Edwards as Shirley Dander Kadiff Kirwan as Marcus Longridge James Callis as Claude Whelan Ruth Bradley as Emma Flyte Tom Brooke as JK Coe Joanna Scanlan as Moira Tregorian Sean Gilder as Sam Chapman Tom Wozniczka as Patrice Joshua Lacey as Tattoo Dog Kiran Sonia Sawar as Agent Giti Rahman Nick Moss as Old Dog Leroy Kincaide as Beard Dog Matthew Amroliwala as Himself Mat Betteridge as Westacres News Presenter Robbie O'Neill as Young Dog Andy Apollo as Upscale Hotel Staff Russell Bentley as Upscale Hotel Doorman Chi Lewis-Parry as Bodyguard 1 Khalid Laith as Tahir Katie Pattinson as News Presenter Alex Dowding as Young Sam Chapman Verity Hayes as Young Isobel Seattle Yangoue as Teenager Eliot Giuralarocca as Upscale Hotel Concierge Jack Staddon as Young Frank Harkness
