A UK newspaper has posted a major leak from the set of HBO’s Harry Potter TV reboot, revealing the series’ lavish new incarnation of Diagon Alley.
The major set leak, first published by The Sun, has now spread further online, where Harry Potter fans are poring over the details. The video itself encompasses a minute-long walkthrough of the long Diagon Alley set, where numerous magical stores can be seen.
Diagon Alley is of course the Potter universe’s main magical shopping street in London, hidden away from Muggles behind the Leaky Cauldron pub. It is visited numerous times throughout the series, and looks to have been constructed a standing set for use throughout the HBO show’s lengthy run.
The Sun has released the first video from the set of Diagon Alley in the HARRY POTTER TV series
We also have a better look at Gringotts and some of the new shops
🔗: https://t.co/irt7d91WXp pic.twitter.com/ohErcr83Mt
— Wizarding World Direct (@WW_Direct) March 9, 2026
Already, fans are comparing it to the version of Diagon Alley seen throughout the original Harry Potter movies, where Harry Potter first receives his wand, and in later years visits the Weasley twins’ joke shop, or investigates its darker side street Knockturn Alley.
Noticeably, the new version of Diagon Alley is much narrower than seen previously. It looks, really, more like an actual London alley and less like a film set, though other details do stand out.
A new business not previously mentioned in the books or movies is Acciocoffee!, which looks to be a barista spot with a (magical?) neon sign. At the far end of the street, as expected, is Gringotts Bank. This does not look too dissimilar to how fans have seen the location represented previously, though is now situated in something of a leafy square.
Quite how this footage has managed to find its way onto the internet is still a mystery, as filming for the series has been kept top secret, with codenames used to hide the production’s brief appearances on locations around England. Otherwise, much of the shoot is being hidden behind closed doors at Warner Bros.’ Leavesden Studios, where this set is likely located.
HBO’s new Harry Potter TV series is expected to debut in early 2027 with an eight-episode first season. Filming began last summer, with various glimpses spotted by fans including work on fresh scenes not from the prior movies or books. Indeed, last month we learned the surprising news that we’ll be seeing more of Draco Malfoy’s home life, as the show won’t be told from “over Harry’s shoulder” like the books or movies.
As for other big changes, the show plans feature John Lithgow’s Dumbledore meeting Nicolas Flamel, reintroduce History of Magic lessons with Richard Durden as Professor Binns, while Lucius Malfoy, Draco’s father played by Johnny Flynn, is expected to join the story in the first season of the show, before his introduction in the books and movies.
Image credit: Warner Bros./HarryPotter.com
Tom Phillips is IGN’s News Editor. You can reach Tom at tom_phillips@ign.com or find him on Bluesky @tomphillipseg.bsky.social
