Tom Baker was unhappy with the fact that the final image that viewers would see of his Doctor would be of him lying prone, being photographed from above.
John Nathan-Turner and Peter Grimwade wanted The Doctor to yell as he fell from the gantry. Tom Baker felt this was unheroic and refused.
The lead character was listed as "Doctor Who" for the last time for the next twenty-four years. Beginning with Castrovalva: Part One (1982), until the series' cancellation in 1989, the character was credited simply as "The Doctor" at the request of Peter Davison. Doctor Who: The Movie (1996) did not have an on-screen character name credit for either the Eighth Doctor or Seventh Doctor; however, the press kit for the film credits them as "The Doctor" and "The Old Doctor" respectively. The 2005 relaunch reverted to using "Doctor Who" until switching again to "The Doctor" at David Tennant's request, starting with The Christmas Invasion (2005).
The Doctor and the Master previously confronted each other on top of another radio telescope in Terror of the Autons: Episode Four (1971).