Guest Stars Nicholas Rowe as Sir Anthony Blunt Lucy Akhurst as Elizabeth Elliott Monika Gossmann as Galina Jennifer Marsala as Iris Alex Price as Watcher Gershwyn Eustache Jnr as Dr Robert Thomas Alexander Terentyev as Orchis Karel Roden as Col. Sergei Brontov Gilly Gilchrist as MI5 Plumber Jay Simpson as MI6 Cabbie Daniel Lapaine as Donald Maclean Steven Elder as Tim Milne Mark Flitton as Joe David Coomber as Embassy Duty Officer Jacob James Beswick as Giovanni Jed Aukin as American Reporter Kate Fahy as Dora Philby Thomas Arnold as Guy Burgess Aaron Vodovoz as KGB Suit Alexandru Rusu as Team Leader Alex Skarbek as KGB General Cristina Catalina as Müller Miquel Brown as Angleton's Housekeeper Greg Kolpakchi as KGB Colonel Richard Shanks as White's Club Steward