Special Guest Stars Ṣọpẹ́ Dìrísù as Sean Donovan 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 Chris Reilly as Nick Duffy Freddie Fox as Spider Webb Naomi Wirthner as Molly Doran Christopher Coghill as Hobbs Eliot Salt as Sarah Dunn Sean Gilder as Sam Chapman Co Starring Rebecca Dyson-Smith as Agent Smith Olwen May as Receptionist at The Park Chi Aloysius as Tall Dog Henry Davis as Louisa's Pickup El Anthony as John Bailey Thomas Coombes as Impounder Alexandra D'Sa as Lab Technician Musa Lutfi as Ice Cream Man
