Cast & creator
Sabrina Bartlett
Best known for Game of Thrones, Midsomer Murders, Doctor Who
Sabrina Lois Bartlett (born September 12, 1991) is an English actress. She is known for her television work, notably, playing Siena Rosso in the first series of Bridgerton (2020) and playing Mariette Larkin in The Larkins (2021).
Movies
3
film credits
Series
15
television credits
Career
18
1997–2026 · acting roles
Credit score
6.9
average across scored titles
Signature credits
Known for
Across film & television
Filmography (18)
Showing 18 of 18 credits
Series
★ 8.5
Game of Thrones
Handmaid
2011
Series
★ 7.5
Midsomer Murders
Tina Tyler
1997
Series
★ 7.6
Doctor Who
Quayle's Ward
2005
Series
★ 5.8
Holby City
Gabriella 'Gabi' Mendoza
1999
Series
★ 8.0
Bridgerton
Siena Rosso
2020
Movie
★ 6.9
The Last Sunrise
Prisha
2026
Series
★ 7.8
Poldark
Keren Smith
2015
Series
★ 7.4
Victoria
Abigail Turner
2016
Series
★ 7.7
Versailles
Mathilde
2015
Series
★ 7.6
Da Vinci's Demons
Sophia
2013
Series
★ 7.0
Knightfall
Princess Isabella
2017
Series
★ 5.7
The Innocents
Lil
2018
Series
★ 5.7
The Larkins
Mariette Larkin
2021
Movie
★ 6.0
F Valentine's Day
Mickey
2026
Series
★ 5.4
I, Jack Wright
Bella Horrell
2025
Series
★ 5.6
Suspects
Hannah Stevenson
2014
Series
★ 7.5
The Passing Bells
Katie
2014F
Movie