Guest Stars Diane Fletcher as Elizabeth Urquhart Colin Jeavons as Tim Stamper Christopher Owen as McKenzie Kenneth Gilbert as Harold Earle William Chubb as John Krajewski Alphonsia Emmanuel as Penny Guy Damien Thomas as Michael Samuels Malcolm Tierney as Patrick Woolton Miles Anderson as Roger O'Neill Isabelle Amyes as Anne Collingridge David Lyon as Henry Collingridge Kenny Ireland as Ben Landless James Villiers as Charles Collingridge John Hartley as Greville Preston Richard Braine as Kevin Spence Hugh Dickson as Dr. Christian Nicholas Selby as Lord Billsborough John Arnatt as Sir Jasper Grainger Geoffrey Bateman as Interviewer Justine Francesca Glenton as PM Girl Peter Gale as Political Secretary