Elspet Gray, who played Thalia, later played Hera in the audio play Immortal Beloved.
His best known roles include Robert Hastings during the final series of Howards' Way, violent P.E. teacher Mr. Hicks in Grange Hill and the Castellan in two Doctor Who stories, Arc of Infinity and The Five Doctors.
Joan of Arc | Infinity Gems | Arc de Triomphe | L'Arc-en-Ciel | Infinity | ARC | The Passion of Joan of Arc | story arc | Prix de l'Arc de Triomphe | Fort Jeanne d'Arc | Dopes to Infinity | Joan of Arc (1948 film) | Infinity Science Fiction | Arc of Infinity | Arc lamp | Arc Angels | The Infinity Gauntlet | Royal Saltworks at Arc-et-Senans | Minute of arc | Jeanne d'Arc | Infinity (audio) | arc lamp | ARC International | An Infinity of Mirrors | Union Sportive Jeanne d'Arc Carquefou | Timelike Infinity | Star Trek: Infinity's Prism | minute of arc | Joan Of Arc | Infinity War |
Later he became the second actor to portray the villain Omega (the first being Stephen Thorne): Collier portrayed Omega in the Fifth Doctor serial Arc of Infinity and later in the Big Finish Productions audio drama Omega.
It also features a character called Hedin, as in Arc of Infinity and the character of Savar is mentioned in the BBC Eighth Doctor Adventures novel Seeing I.