Due to a Loophole in BBC licenses. The Character of SIL and other characters who have appeared in Doctor Who that the writer owns rights to can be used in independent productions without any mentions of the Doctor (Doctor Who). This was first taken advantage to by Reeltime in 1987 with "Wartime".
In Doctor Who, Sophie Aldred played Seventh Doctor companion Ace from 1987's Dragonfire until 1989's Survival. Survival was the last episode broadcast in the original series run (1963-1989).
Sakuntala Ramanee and Jay Ramanee-Murphy are real life mother and son.
4 part drama "from the world of BBC TV's DOCTOR WHO" starring Nabil Shaban as Sil. Sil was featured in 2 Doctor Who stories featuring Colin Baker's Sixth Doctor: Vengeance On Varos and The Trial of A Timelord: Parts 5-8 - these 4 Trial episodes are also known as Mindwarp.
Christopher Ryan returns to the role of Kiv which he originated in the Doctor Who Sixth Doctor story Mindwarp - aka The Trial of A Timelord Parts 5-8.