Guest Stars Hugh Quarshie as Dr. Leon Parmer Garry Cooper as Cliff Cringle Issey King as Martha Parmer Angela Sims as Pat Cringle Frances Grey as Olivia Parmer Danyal Ismail as Yousef Adwan Joyce Veheary as Dr. Lucy Yo Heather Bleasdale as Val Kirkstall Kirsten Foster as Tasmin Yo Geoffrey Lumb as Rob McShane Spike Leighton as Aaron Kirkstall Freya McNulty as Zoe McShane Isabel Butt as Raya Bellingham Sean Kearns as James Stratton