Guest Stars James Cosmo as John Breckman Mary Tamm as Virginia Wilson Tony Benet as Graham David Kinder as Richard Cumming Mark Straker as PC Rogers Sandy Walford as Mrs. Box Sally Baxter as Sheila Cumming Marta Patino as Bethan Lorraine Parslow as Karen Cumming Haf Morgan as Anita Freddie Boardley as Tom Longworth Doel Luscombe as Tommy Boyle Pamela Ashton as Lorna David Dooley as Sergeant Watt Cathy Hawkes as Jenny Branwen Iwan as Serena Thompson Benedict Eccles as Matthew Taylor Shirin Taylor as Helen Masters Paul Cresswell as Roger Meryl Hampton as Pamela Cumming Joe McGann as Bobby Masters