Harry's lightning bolt scar was applied by make-up teams approximately 5,800 times by the end of the film franchise. Daniel Radcliffe had the scar applied 2,000 times, while the rest were applied to stunt doubles and stand-ins.
Daniel Radcliffe reportedly broke eighty wands throughout the franchise, because he used them as drumsticks.
Of the three main performers, Rupert Grint was the only one who never seriously considered leaving the franchise at some point. Daniel Radcliffe thought about leaving after the third movie, and Emma Watson after the fifth. Neither did depart, however, and all three stayed on for all eight movies.
Following the completion of this movie, most of the Hogwarts sets were put on display for the public as part of the Warner Bros. Studio Tour London.
It had been reported that, due to her commitment to Nanny McPhee et le Big Bang (2010), Dame Emma Thompson would be unable to appear in the Deathly Hallows movies. However, she was able to return shortly before the end of filming to once again play Professor Trelawney. She joined her Nanny McPhee castmates Dame Maggie Smith, Rhys Ifans, and Kelly Macdonald. Her sister Sophie Thompson was in Part 1, as Mafalda Hopkirk. Due to their history, Emma Thompson only came in on days that Helena Bonham Carter was not on set.