Warwick Davis Returns as Professor Filius Flitwick in New Harry Potter TV Series

Warwick Davis is set to reprise his role as Professor Filius Flitwick in HBO's upcoming Harry Potter TV series. The series, which is expected to debut in 2026 or 2027, also features new cast members, including Sirine Saba as Herbology Professor Pomona Sprout and Elijah Oshin as Dean Thomas. The show is being produced at Warner Bros. Studios Leavesden, where the original films were made. Fans have reacted enthusiastically to the casting news, with some from the original film team expressing curiosity about how closely the new series mirrors the original films.

Warwick Davis, known for his roles in the Harry Potter film franchise, has been cast to reprise his role as Professor Filius Flitwick in HBO's upcoming TV series. The series, expected to debut in 2026 or 2027, will feature a mix of new and returning cast members, including Sirine Saba as Herbology Professor Pomona Sprout and Elijah Oshin as Dean Thomas. The show is being produced at Warner Bros. Studios Leavesden, where the original films were made.

Davis, who played Flitwick in the original Harry Potter films, will be the first actor to reprise a character from the film franchise in the TV adaptation. His casting was announced as part of the annual "Back to Hogwarts" event, which celebrates the franchise. The series will take a more expansive approach to J.K. Rowling's original books, delving into storylines not included in the films. Davis's return provides a connection between the original films and the new series, even though he will not be reprising his role as Griphook, the goblin from the films.

The series is being written and executive produced by Francesca Gardiner, with Mark Mylod serving as executive producer and director for multiple episodes. The production is in association with Brontë Film and TV and Warner Bros. Television. J.K. Rowling, Neil Blair, and Ruth Kenley-Letts of Brontë Film and TV, and David Heyman of Heyday Films are also executive producers.

The casting announcements have generated enthusiasm among fans, with some from the original film team expressing curiosity about how closely the new series mirrors the original films. The series is expected to run for a decade, with each season based on one of the seven Rowling books.

References:
[1] https://www.hollywoodreporter.com/tv/tv-news/warwick-davis-returns-harry-potter-series-hbo-flitwick-1236358162/
[2] https://www.usatoday.com/story/entertainment/tv/2025/09/01/harry-potter-tv-warwick-davis-professor-flitwick/85928638007/
[3] https://www.the-independent.com/arts-entertainment/tv/news/hbo-harry-potter-cast-dominic-mclaughlin-paapa-essiedu-b2817911.html