James Fox
Professor Chronotis (voice)
Sean Biggerstaff
Chris Parsons (voice)
Lalla Ward
Romana (voice)
Melvyn Hayes
Wilkin (voice)
Paul McGann
The Doctor (voice)
Andrew Sachs
Skagra (voice)
Susannah Harker
Clare Keightley (voice)
Hannah Gordon
The Ship (voice)
John Leeson
K9 (voice)
Barnaby Edwards
Professor Caldera (voice) / Krarg Commander (voice)