Guest Stars Jane Wymark as Joyce Barnaby Barry Jackson as Dr. George Bullard Laura Howard as Cully Barnaby Stephen Moyer as Christopher Wainwright Dolly Wells as Ava Rokeby Michael Feast as Ian Craigie Caroline Lintott as Researcher Graham Turner as Raymond Jennings Susan Tracy as Felicity Gamelin Tilly Blackwood as Trixie Channing Siobhan O'Carroll as Waitress Charles Kay as Arno Gibbs Colin Farrell as Ken Beavers Anna Bolt as Suhami / Sylvie Gamelin Miles Anderson as Guy Gamelin Ashley Artus as Terry Lightfoot Robert Pickavance as William Carter Mary Healey as Mrs. Cook Daniel Hart as Tim Riley Jon Glover as Interviewer Geoffrey Beevers as Newscaster Judy Cornwell as May Cuttle Diane Bull as Heather Beavers