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 Michael Maloney as Neville Gallagher Don Gilet as Bill Viner Aaron Cobham as Jake Galpin Marcia Warren as Belinda Braun Julian Lewis Jones as Guy Bevan Carlyss Peer as Tracey Horton Nicholas Goh as Mark Adler Douggie McMeekin as Dominic Braun Shereen Martin as Debbie Gallagher