According to producer David Heyman, the work print of "Harry Potter and the Deathly Hallows" was at five and a half hours long, and the shooting script was close to five hundred pages, which justified the decision to split the movie into two.
While practicing an aerial stunt on the set, Daniel Radcliffe's stunt-double, David Holmes, suffered serious spinal injuries when he was pulled back and slammed against a wall. That accident left him permanently paralysed, with limited mobility in his arms.
Over five hundred wands were created for this movie. They were checked out and checked in before, during and after the filming day is completed. Many came back broken.
Sir John Hurt's reprisal as Ollivander marks the longest gap, nine years, since his previous appearance in the franchise. Toby Jones' reprisal as Dobby was second longest, at eight years.
Warwick Davis worked a third job. Aside from the two characters he played in the franchise, Davis runs a company called Willow Personnel Management. This company helps little people to find work on film, and found the on-set stand-ins for Dobby and Kreacher.