Guest Stars Fiona Dolman as Sarah Barnaby Annette Badland as Dr. Fleur Perkins Isabel Shaw as Betty Barnaby Tamzin Outhwaite as Samantha Adler Richard Rankin as Danny Wickham Don Gilet as Bill Viner Michael Maloney as Neville Gallagher Marcia Warren as Belinda Braun Julian Lewis Jones as Guy Bevan Aaron Cobham as Jake Galpin Carlyss Peer as Tracey Horton Nicholas Goh as Mark Adler Douggie McMeekin as Dominic Braun Shereen Martin as Debbie Gallagher