Harry Potter (film series) to be re-cast for the third instalment, "Harry Potter and the Prisoner of Azkaban". David Heyman and director Alfonso Cuarón chose Michael Gambon to portray the character of Dumbledore, which he did for all succeeding films. Notable recurring cast members include Helena Bonham Carter as Bellatrix Lestrange, Warwick Davis as Filius Flitwick, Ralph Fiennes as Lord Voldemort, Brendan Gleeson as Alastor Moody, Richard Griffiths as Vernon Dursley, Jason Isaacs as Lucius Malfoy, Gary Oldman as Sirius Black, Fiona Shaw as Petunia Dursley, Timothy Spall as Peter Pettigrew, David Thewlis as Remus Lupin, Emma Thompson as Sybill Trelawney, Mark Williams as
Warner Bros. Studio Tour London – The Making of Harry Potter Warner Bros. Studio Tour London – The Making of Harry Potter Warner Bros. Studios Tour London – The Making of Harry Potter is a public attraction in Leavesden in southeastern England. Not to be confused with The Wizarding World of Harry Potter of Universal Studios theme parks, it is a permanent exhibit offering an authentic behind the scenes glimpse of the "Harry Potter" films. It is situated inside Warner Bros. Studios, Leavesden in Leavesden, near Watford, in southwest Hertfordshire. Though the studios are still active, the tour is actually contained in two soundstages, J and K, and is kept separate