[1] She is the daughter of British conductor, John Eliot Gardiner, and violinist, Elizabeth Wilcock.
[1] During the 3rd and 4th season of HBO's Succession, Gardiner was credited as a consulting producer on the series.
[6] Gardiner worked as an Executive Producer on the television adaptation of His Dark Materials.
[1] In June 2024, Gardiner was hired as the showrunner and executive producer on the HBO adaptation of Harry Potter.
[8][9] Gardiner joined the project alongside Mark Mylod, who would also serve as executive producer and direct several episodes of the show.