On screen
Cast
18 credited performers
Tom Baker
The Doctor
Lalla Ward
Romana (voice)
David Brierly
K9 (archive footage) (voice)
Christopher Neame
Skagra (voice)
Daniel Hill
Chris Parsons (voice)
Artwork unavailable
Denis Carey
Professor Chronotis (archive footage)
Victoria Burgoyne
Clare Keightley (voice)
Gerald Campion
Wilkin (archive footage)
Shirley Dixon
The Ship (voice)
Artwork unavailable
Derek Pollitt
Dr. Caldera (archive footage)
James Coombes
The Krargs (voice)
Artwork unavailable
John Hallet
Police Constable
Artwork unavailable
David Strong
Man in Car (archive footage)
Artwork unavailable
James Muir
Fisherman (archive footage)
Artwork unavailable
Derek Suthern
Krarg
Barnaby Edwards
Krarg
Tim Bentinck
The Doctor (body double)
Toby Hadoke
Continuity Announcer (voice)