John Phillips

as King Dafydd (2 episodes)

as Dr. Charles Langley-Beard (4 episodes)

as Wintour

as Examining Judge

as Magistrate

as DS Bull (1 episode)

as Colonel Harcourt Badger Owen

as Francis Urcombe

as Naso (4 episodes)

as Josiah Wedgwood (1 episode)

as Francis Urcombe

as Brander Merton (1 episode)

as Grand Duke Nicholas (1 episode)

as Sir Gregory Grogram (2 episodes)

as Koestler (archive footage)

as Dr. Heuteufel (6 episodes)

as Mr. Frazer (1 episode), as Jack - Frazer Senior (1 episode)

as Professor Dyne (1 episode)

as Lanning Koestler (1 episode)

as Rev. Howard Whithead

as Examining Judge (1 episode)

as Maitre Lacan (33 episodes)

as Klintzch (2 episodes)