Accidental Downer Ending: The 2020 Christmas Special had Sharon's absence from it be explained by the fact that she had been stranded on a cruise ship for months on end ever since COVID-19 broke out. The show was cancelled after that, making it unclear whether she managed to get off the boat or not (although she is revealed to have become Happily Married to one of the other customers on the ship).
California Doubling: "There's a Girl in My Souk" is set in Morocco but was filmed in Milton Keynes.
Channel Hop: From BBC One (Series 1-9) to ITV (Series 10-12).
Garth was played by two different actors in the BBC series (Simon Nash in Series 1 and Matthew Savage from Series 2-9) and was played by two different actors in the ITV series (Matt Willis in Series 10 and Samuel James in Series 11 and 12).
Chris was recast after Series 1 and was played by Peter Polycarpou from Series 2-6, only for his first actor (David Cardy) to reprise the role from Series 7 onward.
Marcus (when he wasn't The Ghost) was played by Nickolas Grace most of the time except Series 2, when he was played by Stephen Greif.
Darryl was played by Alun Lewis up until Series 7 where he was recast to Douglas McFerran after Lewis had prior commitments on Emmerdale.
The first episode of the Series 9, "Ghost", revolved around a faulty VHS player that turned out to be haunted. Many people since then have grown up barely even aware of what a VHS player is. Furthermore, an episode later on in that same series, "Sunday", featured the three women being trapped in a garage, with only Dorien having a mobile whose battery went dead. Nowadays, chances are that all three women would have mobiles, with at least one of them most likely fully charged.
Similarly, later on that same series in "Model", Dorien phones Sharon when she is visiting Tracey in hospital by ringing the maternity department itself, whereas now chances are she would phone Sharon directly on her mobile. What's more, during the modelling shoot itself, the photographer uses a Polaroid camera to take a quick photo of Sharon - with cameraphones nowadays, Polaroid photos taking ten minutes to come out seems rather tame and obsolete.
Series 2 episode "Jobs for the Girls" has Tracey initially use a typewriter but is convinced by Dorien to use a word processor.
"Wipe That Smile Off Your Tape" (aired in 1992) featured Sharon using a huge camcorder of a type that barely exists nowadays to film a dating video.
The 1994 Christmas Special ("Christmas in Dreamland") features several people at a royal gathering answering their mobile phones (including the Queen herself), portraying mobile ownership as something very snobbish.
In Series 7 episode "Relative Strangers", Dorien uses a payphone that only accepts coins. Nowadays, payphones are far rarer due to most people having phones, and the ones that do exist usually accept cards as well as, if not instead of coins.
Throw It In!: Sharon falling off the cart during the chase scene in "It Happened in Hollywood" was unscripted.
The original concept for the show was that both Tracey and Sharon would enjoy Darryl and Chris' imprisonment and so the two husbands would hire another villain to keep tabs on the girls for them while they spend all of their stolen money. Once the writers realised that Tracey and Sharon were too similar, it was decided Sharon would say the same while Tracey would be nothing but loyal to her husband.
Dorien was intended to be a supporting character who would occasionally pop in to deliver the subplot, but she quickly became a Breakout Character thanks to Lesley Joseph's portrayal of her, leading to a rise in Dorien's importance over the show's run.
Marth Debuted in "Smash Bros.": Some reviewers thought that Sigma's Variable Speed Beam Rifles were inspired by VARIS ammunition from Code Geass, not realising that the F91 made its debut in 1993.
Schedule Slip: Once updated frequently, as of this edit over two years have passed since a chapter was published. Word of God is that a Creator Breakdown is responsible, and that updates are fully intended to resume once the author's situation stabilizes.
What Could Have Been: In the earliest concepts of the story, Ken was an Atlantic Federation citizen living on Heliopolis as a hacker, whose only connection to the conflict at large was his Earth Forces engineer sister and having designed GENESIS for ZAFT, as an "intellectual exercise".
In the first draft of the actual published chapters, Cagalli accompanied Ken to the hangar containing his first Gundam, and boarded the Archangel at Heliopolis; this was scrapped when the author couldn't think of what to do from there.
Word of God: Occasionally invoked for clarification of plot points. Most notably with the aforementioned Retcon, when the author became frustrated over the continued debate by readers as to whether or not Kira and Cagalli were related.
