Guest Stars John D. Collins as Steven Taylor Neil Daglish as Damon Paul Jerrico as The Castellan Leonard Sachs as Lord President Borusa Elspet Gray as Chancellor Thalia Max Harvey as Cardinal Zorac Andrew Boxer as Robin Stuart Alastair G. Cumming as Colin Frazer Malcolm Harvey as The Ergon Colin Baker as Commander Maxil Michael Gough as Councilor Hedin Ian Collier voices The Renegade Maya Woolfe as Hostel Receptionist Uncredited Colin Thomas as Timelord Robert Goodman as Timelord