Peter Haining

companion n.	1984 P. Haining Doctor Who: The Key to Time 38/1 A new companion is introduced in Peter Purves—playing Steven—who sees his role as that of ‘a together, headstrong young man’. Ibid. 63/1 The Doctor loses his two companions, Ben and Polly…. With their departure, a new companion is announced.
Cyberman n.	1984 P. Haining Doctor Who: The Key to Time 167/2 The Cybermen too were destined for more appearances and so far have had encounters with all the Doctors and have proved to be almost as popular enemies as the Daleks themselves!
regeneration n.	1984 P. Haining Doctor Who: The Key to Time 9/1 In the first episode of ‘The Power of the Daleks’ in 1966, the Doctor (then in his Patrick Troughton regeneration) rummaged around among things in the TARDIS and produced…a small, leather-bound book. [Ibid. 210] The plot progresses inevitably towards the terrible conflict which necessitates the Doctor’s regeneration into his new, youthful body.
time lord n.	1984 P. Haining Doctor Who: The Key to Time 38/2 The story also introduces for the first time another Time Lord apart from the Doctor—the Meddling Monk.