- Actor-Inspired Element: Terry Molloy takes credit for getting Davros to hover, with an off-the-cuff remark to Graeme Harper.
- Cast the Runner-Up: Colin Spaull was initially cast as the mutant, but was subsequently recast as Lilt.
- Creator's Favorite Episode: Eric Saward considers this to be his best work.
- Edited for Syndication: When this story was broadcast in the United States, Australia and New Zealand, it was as four twenty-five-minute episodes. Part one sees Natasha and Grigory hiding in the catacombs as Takis and Lilt are wheeling a body through the tunnels, while the cliffhanger in part three features either the Doctor telling Peri that she's in great danger, or in some edits of the story Davros ordering his Daleks to kill the DJ. This edit was also used for the serial's 1993 repeat broadcast on BBC Two, and is the one Pluto TV uses in North America.
- Executive Meddling: Jonathan Powell reacted badly to Jenny Tomasin's portrayal of Tasambeker. As such, both episodes were edited to reduce her screentime.
- Inspiration for the Work: Eric Saward was inspired by The Loved One, entranced by the idea of a story which ruminated upon the treatment of the dead by the living..
- Missing Episode: The complete footage of the Doctor finishing his line "...Blackpool" at the end of the episode (a scene that was cut, being replaced by a freeze-frame in the finished programme) now no longer exists.
- No Adaptations Allowed: The fourth and final Doctor Who story from the original run not to receive a Target novelisation; as with the previous series' Resurrection of the Daleks, this is because an amount of the fee would have gone to Terry Nation to cover the rights for the Daleks and Eric Saward was dissatisfied by the reduced payment. Following their previous success with adapting the previously unnovelised Douglas Adams stories, this was the final classic Who story to receive a novelisation when BBC Books published one in 2019.
- Reality Subtext: Happened unintentionally with Part 2's open ending; while it was meant to directly segue into the beginning of the ultimately unfilmed serial "The Nightmare Fair", this was almost the last Doctor Who episode, as Michael Grade wanted to cancel the show before negotiations with staff pared it down to a double-length hiatus and a retool.
- Stunt Casting: Alexei Sayle playing an in-universe Fake American radio DJ.
- Throw It In!: Colin Baker ad-libbed the "No 'arm in trying" gag after Davros' arm is shot off. He also improvised the freeze-frame on the word "Blackpool".
- What Could Have Been:
- Planned shots of the Daleks being blown into the sky had to be abandoned because they couldn't get the equipment to the location.
- There were talks of Laurence Olivier playing the mutant.
- Julian Glover, Patrick Stewart, Peter Vaughan and David Warner were considered for Orcini.
- Real life DJs such as Alan Freeman and Jimmy Savile were seriously considered for The DJ. Phil Collins and Roger Daltrey were also considered.
- Robbie Coltrane was considered for the DJ and Takis.
- Pat Roach was considered for Takis.
- Working Title: The End of the Road.
- You Look Familiar: Eleanor Bron (Kara) had previously played a French art critic.
Trivia / Doctor Who S22 E6 "Revelation of the Daleks"