They[a] portrayed Diana, Princess of Wales in the fourth season of the Netflix historical drama The Crown (2020), for which they won a Golden Globe and were nominated for a Primetime Emmy Award.

They subsequently starred in the 2022 romantic drama films My Policeman and Lady Chatterley's Lover, and in the 2023 thriller miniseries A Murder at the End of the World.

[4][6] They took a gap year, during which time they took a Shakespeare course at the London Academy of Music and Dramatic Art and volunteered as a teacher at a school in Knysna, South Africa.

[3][7][8] Corrin made their television debut in 2019 with a guest appearance in an episode of the ITV detective drama Grantchester and a recurring role as Esme Winikus in the first season of the Epix DC series Pennyworth.

[11] Corrin was nominated for a Laurence Olivier Award for Best Actress for their 2021 West End debut in Anna X at the Harold Pinter Theatre.