
Locke has spoken about his experiences of being a young gay man from the Isle of Man and their parallels with Charlie's story in the Heartstopper series. In November 2022, it was announced that Locke had been cast in Marvel Studios' WandaVision spin-off television series Agatha: Coven of Chaos for Disney+. While Locke was 17 at the time of the filming, his role has him playing a 14–15 year old student in an English boys' grammar school. He was chosen out of 10,000 other potential actors who were up for the role through an open casting call. In April 2021, it was announced Locke would star as lead character Charlie Spring in his debut television role in the 2022 Netflix coming-of-age series Heartstopper, an adaptation of the webcomic and graphic novel of the same name by Alice Oseman. Locke participated in the 2020 National Theatre Connections as well as productions at the Gaiety Theatre and with the Kensington Art Centre's youth group. While in high school, Locke and three fellow students submitted a petition to government officials to investigate the feasibility of welcoming Syrian refugees to the Isle of Man. He told ITV's This Morning in April 2022 that he was studying for A-Level exams in politics, history and English.

Joseph William Locke was born on 24 September 2003.

He is known for his lead role as Charlie Spring in the Netflix teen series Heartstopper (since 2022), for which he received a nomination for the Children's and Family Emmy Award for Outstanding Lead Performance.

Joseph William Locke (born 24 September 2003) is a Manx actor.
