Guest Stars Diane Fletcher as Elizabeth Urquhart Colin Jeavons as Tim Stamper William Chubb as John Krajewski Kenneth Gilbert as Harold Earle Christopher Owen as McKenzie Damien Thomas as Michael Samuels Miles Anderson as Roger O'Neill Malcolm Tierney as Patrick Woolton Alphonsia Emmanuel as Penny Guy Kenny Ireland as Ben Landless David Lyon as Henry Collingridge Isabelle Amyes as Anne Collingridge James Villiers as Charles Collingridge John Hartley as Greville Preston Angela Rippon as Newsreader Tommy Boyle as Stephen Kendrick Nicholas Selby as Lord Billsborough John Arnatt as Sir Jasper Grainger Alex Leppard as Commissionaire Henrietta Voigts as Secretary Jeff Nuttall as Biggman Delaval Astley as Political Secretary Michael Tomlinson as Constable David Blake Kelly as Charles Goodman Tariq Yunus as Jhabwala Colin Dudley as Speaker Gertan Klauber as Blackhead Robert Ashby as Presenter Sally Faulkner as Junior Health Minister Raymond Mason as Stoat Nadim Sawalha as Bank Manager Frank Williams as Treasurer