Fans have received their first clear look at the magical shopping district of Diagon Alley for the upcoming HBO Harry Potter television series. A video leak, first published by The Sun on March 8, 2026, shows a minute-long walkthrough of the newly constructed set, revealing a version of the iconic location that is noticeably different from the one seen in the original films . The footage has since spread rapidly across social media, giving Potterheads worldwide plenty of details to examine .
A Narrower, More Authentic Looking Alley
The most immediate difference viewers are pointing out is the scale and feel of the new street. Unlike the wider, more spacious Diagon Alley built for the movie franchise, this version is significantly narrower . The design choice makes the set feel less like a stylized film backlot and more like an actual, tucked-away London thoroughfare, which aligns with its description in the books as a hidden space wizards can access behind the Leaky Cauldron . The cozier dimensions could also make the street feel more bustling and crowded when filled with background actors during busy shopping scenes .
New Shop and Familiar Landmarks
While many storefronts will be familiar to fans, the leaked video has revealed at least one new addition created specifically for the series. A shop called Acciocoffee! is visible, featuring a prominent neon sign . The name is a playful reference to the “Accio” summoning charm from the wizarding world. This establishment, which appears to be a magical café or coffee bar, is not present in the original books or the Warner Bros. films .
At the far end of the street, the majestic Gringotts Bank stands as a centerpiece. While its design remains recognizable, it is now situated in what appears to be a small, leafy square, giving it a slightly different context than in the movies . The set, believed to be a permanent construction at Warner Bros. Studios in Leavesden, is designed for long-term use across the show’s planned multiple seasons.
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Production Details and Future Storylines
The HBO series, a reboot of J.K. Rowling’s book series, is scheduled to premiere in early 2027 with a first season of eight episodes . Filming began in the summer of 2025, and the production has been using codenames and tight security to keep details under wraps, making this leak a significant event for fans . The creative team is led by showrunner Francesca Gardiner and executive producer Mark Mylod, both known for their work on Succession .
The show has confirmed several key cast members. John Lithgow will play Albus Dumbledore, Paapa Essiedu is set as Severus Snape, and Johnny Flynn has been cast as Lucius Malfoy . The young trio has also been cast, with Dominic McLaughlin as Harry Potter, Arabella Stanton as Hermione Granger, and Alastair Stout as Ron Weasley .
The series promises to explore storylines beyond Harry’s immediate point of view. Reports confirm the first season will include original scenes, such as Dumbledore meeting the alchemist Nicolas Flamel and reintroducing History of Magic lessons with Professor Binns, played by Richard Durden . The show will also delve into the home life of Draco Malfoy, with his father Lucius appearing in the series earlier than his role in the books and films .
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