Harriet Marston Slater 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.
- Occupation
- actor
- Citizenship
- United Kingdom
- Born
- February 18, 1994