History Trivia / TheWorstWitch

** A necessary one due to a change in character. Miss Drill's appearance is not described but the illustrations show her as a hard-faced BrawnHilda. In the TV series where she is a CoolTeacher, she's played by the more athletically built and kind-faced Clare Porter.

* NeverWorkWithChildrenOrAnimals: A twofer, considering it was a series full of child actresses who each had a pet cat.

* NoExportForYou: This is an odd example, but the entire series, including ''Weirdsister College'', ''The New Worst Witch'' and the movie from the 80's, is available on DVD ... in Australia. Thankfully for fans of the show, however, the UsefulNotes/RegionCoding on the box is wrong. The discs are set for region 0, not region 4.

** The 2017 series is also set to avert this by being made available for international streaming on Netflix, presumably once the series has finished airing on CBBC.

* ReplacementScrappy: Fans were not happy when Bella Ramsey left the show and is taken over by Lydia Page for the final season. This also happened for ''Series/SoAwkward'' where fan-favorite Ameerah Falzon-Ojo is replaced by Emily Burnett for the show's final season. However, fans can still find them both on ''WesternAnimation/{{Hilda}}''.

** In the 2017 series, from season 4 onward Lydia Page takes over playing Mildred from Bella Ramsey, who left to focus on her mental health. This is explained as a result of Mildred accidentally mixing an appearance changing potion that permanently changes her.

* SameLanguageDub: When aired in North America, the series was redubbed with Canadian voice actors, likely due to the show being a British-Canadian co-production. Cackle's actress in the show, who was Canadian in real life, voiced her own character using her natural accent.

* MeanCharacterNiceActor: On-Camera, Bella Ramsey and Jenny Richardson play mortal enemies. Off-Camera, they are friends in real life.

* CaliforniaDoubling: As this was a joint UK-Canada production, a few episodes were filmed in Canada. These usually take place outside the school, explained away as special trips for Mildred and friends. They're all still implied to take place in the UK though, and "Let Them Eat Cake" has Cosy's Tearoom as within walking distance of Cackle's.

* CaliforniaDoubling: As this was a joint UK-Canada production, a few episodes were filmed in Canada. These usually take place outside the school, explained away as special trips for Mildred and friends. They're all still implied to take place in the UK though.

* FakeBrit: Canadian actress Claire Coulter puts on a British accent to play Miss Cackle in the TV series. However, she did spend a good part of her childhood in London, and would have likely picked up the accent. As a result, when the series was dubbed for the US, Claire Coulter was the only cast member to dub herself (using her normal accent).

* WriteWhoYouKnow: Jill Murphy based Maud on her best friend as a teenager, a girl called Elizabeth.

* SameLanguageDub: The American broadcast of the series dubbed American accents over the British dialogue. Clare Coulter dubbed her own voice with her natural accent. Kate Duchene was the only one who kept her voice in the dub.

** Felicity Jones describes the difficulty of acting alongside the cats, especially trying to make it look like they weren't clawing the girls' faces off in scenes where they were supposed to be friendly.

* OneBookAuthor: A few of the actresses in the 1998 series never acted again - despite being series regulars - such as Emma Brown (Maud), Harshna Brahmbhatt (Jadu), Poppy Gaye (Griselda) among others.

* PlayingAgainstType: In the TV movie, Miss Hardbroom was played by Diana Rigg - who at that point was more famous for playing glamorous {{Action Girl}}s in spy movies.

* RealLifeWritesThePlot:
** The change in actress for Ethel was apparently due to Felicity Jones missing home too much while filming Season 1.
** The fourth season became ''Weirdsister College'' because it was getting unbelievable that Mildred would still be at school.
** Those infamous green screen effects during Creator/TimCurry's song are the result of a last-minute reshoot after the director noticed he was drunk in the on-location footage (Tim and the assistant director had been sharing some gin to keep warm).
** Bella Ramsey left the 2017 version after the third season to focus on her mental health, so Lydia Page takes over as Mildred. The first episode of the fourth season has Mildred being affected by an appearance-changing potion that permanently changes her appearance.

* SeparatedAtBirthCasting: In 2017 version Jenny Richardson (Ethel), Miriam Petche (Esmerelda) and Trixie Hyde (Sybil) share a resemblance with each other.

* WorkingTitle: ''Weirdsister College'' had a working title of ''The Worst Witch: The College Years'' (and ended up being used in an autumn CITV promo.)

* FakeBrit: Canadian actress Claire Coulter puts on a British accent to play Miss Cackle in the TV series. However, she did spend a good part of her childhood in London, and would have likely picked up the accent.

* CelebrityVoiceActor: In the [[DuelingDubs NHK]] Japanese dub, Mildred is voiced by TV actress Rio Suzuki, who many anime fans can recognize her as Manga/{{Dororo}} from the 2019 animated adaptation from the manga of the same name.

* CelebrityVoiceActor: In the Japanese dub, Mildred is voiced by TV actress Rio Suzuki, who many anime fans can recognize her as Manga/{{Dororo}} from the 2019 animated adaptation from the manga of the same name.

** Japan is an very bizarre case: Since the debut of the 2017 series, many people thought neither this version, nor any other part of the franchise would be brought there, due to the similarity with ''Anime/LittleWitchAcademia'', from which the animated adaptations are compared with the book and other adaptations, but surprisingly enough, the 2017 version got a Japanese dub in January 2020, through not in Netflix's Japanese feed, but on national TV by Creator/{{NHK}} instead. It also helps a lot none of the voice actresses who worked in that anime series works in the dub of the show.

** In the 2017 series, from season 4 onward Lydia Page takes over playing Mildred from Bella Ramsey. This is explained as a result of Mildred accidentally mixing an appearance changing potion.

* PlayingTheirOwnTwin: Clare Coulter plays both Miss Cackle and her twin sister Agatha. Charlotte Rae likewise played them both in the TV movie.

** Japan is an very bizarre case: Since the debut of the 2017 series, many people thought neither this version, nor any other part of the franchise would be brought there, due to the similarity with ''Anime/LittleWitchAcademia'', from which the animated adaptations are compared with the book and other adaptations, but surprisingly enough, the 2017 version would be dubbed to Japanese in December 2019, through not in Netflix's Japanese feed, but on national TV by NHK instead. It also helps a lot none of the voice actresses who worked in that anime series works in the dub of the show.

** Japan is an very bizarre case: Since the debut of the 2017 series, many people thought neither this version, nor any other part of the franchise would be brought there, due to the similarity with ''Anime/LittleWitchAcademia'', from which the animated adaptations are compared with the book and other adaptations, but surprisingly enough, the 2017 version would be dubbed to Japanese in December 2019, through not in Netflix's Japanese feed, but on national TV by NHK instead.

* ActingForTwo: The actress playing Miss Cackle (in the adaptations) also plays her evil twin sister Agatha.

* CelebrityVoiceActor: In the Japanese dub Mildred is voiced by TV actress Rio Suzuki, who many anime fans can recognize her as Manga/{{Dororo}} from the 2019 animated adaptation from the manga of the same name.

* MarthDebutedInSmashBros: The 2017 series is the first time any part of the franchise is being translated to Japanese, as neither the book nor previous adaptation were brought there.

* CelebrityVoiceActor: In the Japanese dub Mildred is voiced by TV actress Rio Suzuki, who many anime fans can recognize her as Manga/{{Dororo}} from the 2018 animated adaptation from the manga of the same name.