She is known for her role as Elle Argent in the Netflix series Heartstopper (2022–present), for which she was nominated for a Children's and Family Emmy Award for Outstanding Supporting Performance.
[9][10] Before her acting breakthrough, she initially gained a following through her TikTok videos about her experiences as a Black British teenage trans woman.
[3][5] At the age of 17 in April 2021, Finney was cast as Kelsa in the Billy Porter film Anything's Possible and Elle Argent in the Netflix series Heartstopper, the latter of which premiered in 2022.
[11][12] She had to pull out of Anything's Possible due to COVID-19 travel restrictions impacting her ability to get a United States work visa, leading her to be replaced by Eva Reign.
[14][15][16] On 30 August 2023, it was also announced that Finney would appear as a guest judge during the fifth series of RuPaul's Drag Race UK set to begin broadcasting in autumn 2023.