The film's story is mostly told through the eyes of Hill's character Buddy, "a smart, cheery 9-year-old and a fictional version of Branagh himself", as described by Jeanette Catsoulis of The New York Times.
[7] Hill also played the title role in the World War II-set short film Rian, which premiered at the 2021 CineMagic.
[9] In 2022, Hill attended Italy's David di Donatello ceremony as a special guest, picking up the Best Foreign Film award won by Belfast.
[10] In the same year, he made his television debut in Magpie Murders, a BritBox and PBS Masterpiece adaptation of the 2016 mystery novel of the same by Anthony Horowitz.
In September 2023, he appeared as Leopold Ferrier in Branagh's supernatural mystery film A Haunting in Venice, based on Agatha Christie's Hallowe'en Party.