Development

Before David Yates was officially chosen to direct the film, many others had been offered the job, and previous directors had expressed an interest in returning. Alfonso Cuarón, the director of the third film, stated he "would love to have the opportunity" to return.Goblet of Fire director Mike Newell declined a spot to direct the fifth film, and was not approached for this one either.Terry Gilliam was Rowling's personal choice to direct Philosopher's Stone. However, when asked whether he would consider directing a later film, Gilliam said, "Warner Bros. had their chance the first time around, and they blew it."

Yates has retained composer Nicholas Hooper, costume designer Jany Temime, visual effects supervisor Tim Burke, creature and make-up effects designer Nick Dudman, and special effects supervisor John Richardson from the fifth film. Since February 2007, Stuart Craig, the production designer of the first five films as well, has been designing sets, including the cave, and the astronomy tower, where the climax of the film takes place. Academy Award nominated Bruno Delbonnel is the film's cinematographer.

Yates and Heyman have noted that some of the events of Harry Potter and the Deathly Hallows may influence the script of the film, and that there will not be as many memories in the film as in the book. Yates noted: "We're making a decision right now to compress those a wee bit, but we've still got some really cool ones.". Steve Kloves, who wrote the first four films, returned for the sixth adaptation. Rowling has read Kloves' script and crossed out a passage in which Dumbledore recalls a past female love, penning in the margin "Dumbledore is gay."