Guest Stars Gabrielle Green as Katrina MacKenzie Louisa Connolly-Burnham as Shannon Kelly Mark Fleishmann as Tim Jeffries Shorelle Hepkin as Kay Rachel Teate as Kara Nahom Kassa as Sam Jonathan Raggett as Jimmi Niek Versteeg as Liam Hunter Siwan Morris as Ceri Cerith Flinn as Aran Letty Butler as Dr. Rebecca Whitewood Mandeep Dhillon as Dacia Shaun Dooley as Kincaid Jacqueline Boatswain as Victoria Sweeney Lisa Marged as Meinir Alun Raglan as Alric Phillippa Wilson as Mrs. Vaughan Lottie Rhodes as Gwyn Richard Harrington as Gerwyn Jake Shingler as Cadwr Jonah Rice as Ollie Peter Stevens as Ben Robbie Farrell as Joe