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 Joshua Lacey as Tattoo Dog Tom Wozniczka as Patrice Nick Moss as Old Dog Kiran Sonia Sawar as Agent Giti Rahman Leroy Kincaide as Beard Dog Matthew Amroliwala as Himself Mat Betteridge as Westacres News Presenter Andy Apollo as Upscale Hotel Staff Robbie O'Neill as Young Dog Russell Bentley as Upscale Hotel Doorman Khalid Laith as Tahir Chi Lewis-Parry as Bodyguard 1 Katie Pattinson as News Presenter Jack Staddon as Young Frank Harkness Alex Dowding as Young Sam Chapman Verity Hayes as Young Isobel Seattle Yangoue as Teenager Eliot Giuralarocca as Upscale Hotel Concierge
