Special Guest Stars Ṣọpẹ́ Dìrísù as Sean Donovan Guest Stars Rosalind Eleazar as Louisa Guy Saskia Reeves as Catherine Standish Christopher Chung as Roddy Ho 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 Olwen May as Receptionist at The Park Henry Davis as Louisa's Pickup El Anthony as John Bailey Rebecca Dyson-Smith as Agent Smith Chi Aloysius as Tall Dog Musa Lutfi as Ice Cream Man Thomas Coombes as Impounder Alexandra D'Sa as Lab Technician
