Guest Stars Peter Pratt as The Master Michael Bilton as Time Lord John Dawson as Time Lord George Pravda as Castellan Spandrell Bernard Horsfall as Chancellor Goth Erik Chitty as Co-Ordinator Engin Maurice Quick as Gold Usher Angus MacKay as Cardinal Borusa Derek Seaton as Commander Hilred Llewellyn Rees as The President Hugh Walters as Commentator Runcible