Biography:Jamie Christopher (1 July 1971–29 August 2023) was a British assistant director and film producer. He worked on numerous films, including the Harry Potter series, Guardians of the Galaxy, Avengers: Age of Ultron, and Star Wars: The Last Jedi. Christopher worked in the first assistant director role, or the same role for a second unit, for all eight Harry Potter movies. He often worked with James Gunn, Rian Johnson, and Kevin Feige. Description above from the Wikipedia article Jamie Christopher, licenced under CC-BY-SA, full list of contributors on Wikipedia.