This was an examination of race seen through an increasingly surreal vision of Birmingham's criminal underworld.
He wrote the Doctor Who serials Vengeance on Varos (1985) and The Trial of a Time Lord: Mindwarp (1986).
[6] He also wrote a script called Mission to Magnus which featured the character Sil from his previous televised serials.
His most recent contribution to the series were The Creed of the Kromon (2004) and Antidote to Oblivion (2013), as Big Finish audio releases.
Martin's stage play Thee and Me, a work dealing with the effects of ozone depletion in the atmosphere in the year 2040, was staged at London's Lyttelton Theatre in February 1980, directed by Michael Rudman, but was withdrawn early from the repertoire because of poor reviews and "appalling" ticket sales.