A set leak from The Sun has handed Harry Potter fans their first glimpse inside HBO's reimagining of one of the wizarding world's most iconic locations. The leaked video shows a minute-long walkthrough of Diagon Alley, the magical shopping street hidden from Muggle eyes behind the Leaky Cauldron pub in central London.
The set, believed to be constructed at Warner Bros. Studios Leavesden, reveals a notably different vision from how the location appeared throughout the eight Harry Potter films. Most strikingly, this version of Diagon Alley is considerably narrower, resembling an actual London street rather than a theatrical film set. The design suggests the production team has prioritised authenticity over spectacle.
The leaked footage shows familiar landmarks reimagined for the television series. Gringotts Bank, the goblin-run financial institution central to the wizarding economy, sits at the far end of the street within a leafy square. Nearby storefronts populate the narrow lane, many of which will be familiar to devoted readers and film-goers. One unexpected addition, however, is Acciocoffee, a barista spot featuring a neon sign that suggests a magical twist on the modern coffee culture.
How the footage escaped onto the internet remains unclear, particularly given the production's otherwise tight security. Filming has been kept largely confidential, with code names used to disguise the series' occasional public location shoots across England. Most work proceeds within the closed studio environment at Leavesden.
The HBO series is expected to debut in early 2027 with an eight-episode first season. The production signals a more expansive approach to the source material compared to the films;each season will be 'faithful' to the book series, withfilming for the first season expected to last until mid-2026.
Beyond the set design, the adaptation includes creative departures from previous iterations.The principal cast includes John Lithgow as Albus Dumbledore, Janet McTeer as Minerva McGonagall, Paapa Essiedu as Severus Snape, and Nick Frost as Rubeus Hagrid. The series will also explore storylines not extensively covered in the films; viewers will see more of Draco Malfoy's home life, andJohnny Flynn will play Lucius Malfoy, Draco's father, in the first season, before his introduction in the books and original films.
The leaked set footage represents a rare window into a production that has maintained unusual secrecy for a franchise of this scale. As the 2027 premiere approaches, such glimpses may become more frequent, but for now, this Diagon Alley reveal offers fans a tangible sense of how HBO's producers are reimagining the wizarding world for long-form storytelling.