Harriet Marston Slater (born 18 February 1994) is an English actress. On television, she is known for her roles in the DC Universe series Pennyworth (2019–2022), the MGM+ period drama Belgravia: The Next Chapter (2024) and the Starz prequel Outlander: Blood of My Blood (2025). She was named a 2023 Bright Young Thing by Tatler. (Via Wikipedia)