- Dueling Shows: ITV premiered Buck Rogers in the 25th Century directly opposite the first episode, after a high-profile promotional campaign. ITV had never previously attempted to compete with Doctor Who by scheduling science fiction in that slot before, and its change of policy in 1980 is credited as being a major factor in the significant slump in ratings seen for the early stories in Doctor Who's eighteenth season. Not only did small audiences watch the first episode, but figures dropped each week. By week three, Doctor Who did something it hadn't done in eighteen years: it fell out of the top hundred programmes for the week it was transmitted.
- Real-Life Relative: The baby Pangol was played by Alys Dyer, whose mother was production unit manager Angela Smith.
- Troubled Production: Production of the serial was extremely challenging. Tom Baker and Lalla Ward's tumultuous off-screen relationship was at a nadir, causing the mood on set to be distinctly chilly. Director Lovett Bickford's management of the shoot caused it to go so badly over budget that John Nathan-Turner was severely reprimanded by his superiors. Bickford would never work on the series again.
- Working Title: The Argolins and Avalon.
- You Look Familiar: Laurence Payne had previously played Johnny Ringo.
Trivia / Doctor Who S18 E1 "The Leisure Hive"