Harry Potter Films - Production

Production

Filming of the series began at Leavesden Studios in September 2000 and ended in December 2010, with post-production on the final film lasting until Summer 2011. Leavesden Studios was the main base for filming Harry Potter and it opened to the public as a studio tour in 2012 (renamed as Warner Bros. Studios, Leavesden).

David Heyman has produced all the films in the series with his company Heyday Films, while David Barron joined the series as an executive producer on Chamber of Secrets and Goblet of Fire. He was later appointed producer on the last three adaptations. Chris Columbus was an executive producer on the first two films alongside Mark Radcliffe and Michael Barnathan, but became a producer on the third film alongside Heyman and Radcliffe. Other executive producers include Tanya Seghatchian and Lionel Wigram. J. K. Rowling, author of the series, was asked to become a producer on Goblet of Fire, but declined. However, she accepted the role on the two-part Deathly Hallows. Heyday Films and Columbus' company 1492 Pictures collaborated with Duncan Henderson Productions in 2001, Miracle Productions in 2002 and P of A Productions in 2004. Even though Prisoner of Azkaban was the final film produced by 1492 Pictures, Heyday Films continued with the franchise and collaborated with Patalex IV Productions in 2005. The sixth film in the series, Half-Blood Prince, was the most expensive film to produce as of 2009. Warner Bros. split the seventh and final novel in the series, Deathly Hallows, into two cinematic parts. The two parts were filmed back-to-back from early 2009 to summer 2010, with the completion of reshoots taking place on 21 December 2010; this marked the end of filming Harry Potter. Heyman stated that Deathly Hallows was "shot as one film", but was released in two feature-length parts.

Tim Burke, the visual effects supervisor of the series, said of the production on Harry Potter, "It was this huge family; I think there were over 700 people working at Leavesden, an industry in itself." David Heyman said, "When the first film opened, no way did I think we'd make eight films. That didn't seem feasible until after we'd done the fourth." Nisha Parti, the production consultant on the first film, said that Heyman "made the first film very much the way he felt the studio wanted to make it." After the film's success, Heyman was given "more freedom".

One of the aims of the filmmakers from the beginning of production was to develop the maturity of the films. Chris Columbus stated, "We realised that these movies would get progressively darker. Again, we didn't know how dark but we realised that as the kids get older, the movies get a little edgier and darker." This transpired with the succeeding three directors who would work on the series in the following years, with the films beginning to deal with issues such as death, betrayal, prejudice, and political corruption as the series developed narratively and thematically.