Guest Stars James Allenby-Kirk as Gavin Hayes Keith Fleming as Lesley Gary Young as Yi Tien Cho / Mr. Willoughby Alison Pargeter as Margaret Campbell Mark Hadfield as Archibald Campbell Paul Brightwell as Sir Percival Turner Ian Reddington as Harry Tompkins Ian Conningham as John Barton Cyrielle Debreuil as Madame Jeanne Zoe Barker as Brighid Calum Cormack as Fire Brigade Captain Gary French as Mr. Haugh Robin B. Smith as McDaniel
