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 Graham Turner as Raymond Jennings Mary Healey as Mrs. Cook Susan Tracy as Felicity Gamelin Charles Kay as Arno Gibbs Caroline Lintott as Researcher Tilly Blackwood as Trixie Channing Anna Bolt as Suhami / Sylvie Gamelin Diane Bull as Heather Beavers Colin Farrell as Ken Beavers Judy Cornwell as May Cuttle Jon Glover as Interviewer Daniel Hart as Tim Riley Siobhan O'Carroll as Waitress Robert Pickavance as William Carter Miles Anderson as Guy Gamelin Ashley Artus as Terry Lightfoot Geoffrey Beevers as Newscaster