Gary Oldman is not asking HBO’s new Harry Potter cast to recreate the films he helped make. He thinks television gives them an opportunity the movies never had.
Speaking with Entertainment Weekly at the Toronto International Film Festival, the former Sirius Black actor said the longer format should allow the adaptation to preserve considerably more of J.K. Rowling’s books. He believes that could make the new version “more satisfying” for viewers.
“We had to cut a lot, and still we could only get the films down to, like, three hours,” Oldman said. He added that “a lot of character detail was sacrificed” because even the longer movies still had to fit within a conventional theatrical running time.
HBO has considerably more room for the first book alone. Harry Potter and the Philosopher’s Stone will run eight episodes, with Dominic McLaughlin playing Harry alongside Arabella Stanton as Hermione Granger and Alastair Stout as Ron Weasley. The season premieres December 25 on HBO and HBO Max.
Oldman Remembers How Much the Movies Had to Leave Behind
Oldman joined the franchise as Sirius in 2004’s Harry Potter and the Prisoner of Azkaban and returned for Goblet of Fire, Order of the Phoenix and Deathly Hallows: Part 2. By that point, the novels had become increasingly large, while each film still had to tell a complete story within a few hours.
Oldman said he believes the television series will be able to follow the books “pretty much word-for-word,” although HBO has described the project more broadly as a faithful adaptation rather than promising a literal recreation of every page. “Which I think, as a viewer, would be more satisfying,” he told EW.
His enthusiasm for the new adaptation did not come with criticism of the films themselves. Oldman said he remains “proud” and “grateful” to have been part of the franchise and called its success a phenomenon unlike anything he expects to see again.
He also credited Chris Columbus, who directed Philosopher’s Stone and Chamber of Secrets, with establishing the screen version of the Wizarding World and assembling the young cast at its center. Oldman noted how unusual it was to watch those actors repeatedly return and grow into their roles over the course of the series.
Oldman Was Already Curious About the New Version Last Year
Oldman was making a similar point after receiving his knighthood at Windsor Castle in September 2025. Asked about HBO’s adaptation, he said the films had been forced to cut large portions of the books because even two-and-a-half or three-hour running times left limited space.
“I’m intrigued,” he said at the time. “I think I’ll watch it.”
Oldman also ruled out returning as Sirius, saying his days playing Harry’s godfather were behind him. He joked that Dumbledore might have tempted him, although John Lithgow had already been cast as the Hogwarts headmaster.
His interest instead has remained with what the new cast and creative team can do with substantially more screen time. Oldman told EW at TIFF that he has not spent much time revisiting his own performance as Sirius, even though fans still regularly ask him to sign photographs of the character.
HBO Has Eight Hours to Tell the First Book
The people making the new series have openly identified extra time as one of their biggest advantages. Showrunner Francesca Gardiner and director Mark Mylod previously said they have “8 hours to tell the first book,” allowing them to explore parts of the story that could not fit into the 2001 film.
That includes characters and locations movie audiences never saw. The production has confirmed that Peeves, the Hogwarts poltergeist omitted from the finished films, will appear, while the creators have also discussed exploring places such as the Hogwarts staffroom and expanding areas of the castle that received little or no screen time before.
The first teaser has already shown book material that did not appear in the original movie, including more of Harry’s life before Hogwarts. The official Harry Potter site specifically highlighted Harry’s Muggle school experience, a part of his childhood largely absent from the films.
HBO has described each season as an adaptation of Rowling’s books with the additional “depth and detail” available through long-form television. Francesca Gardiner writes and executive produces the series, while Mylod executive produces and directs multiple episodes.
A New Cast Gets the Extra Time Oldman Never Had
The first season also introduces an entirely new principal cast. Along with McLaughlin, Stanton and Stout as Harry, Hermione and Ron, Lithgow plays Albus Dumbledore, Janet McTeer is Minerva McGonagall, Paapa Essiedu plays Severus Snape and Nick Frost takes over as Rubeus Hagrid.
HBO has not announced a new Sirius Black, and the character is not central to the story until Prisoner of Azkaban. Oldman has made clear that he does not expect to return to the part when the series reaches that book.
The first eight episodes will provide the earliest test of the advantage Oldman described at TIFF. HBO has set December 25 for the premiere of Harry Potter and the Philosopher’s Stone on HBO and HBO Max.