Sabrina Lois Bartlett (born September 1991) is an English actress. She is known for her roles in the BBC One miniseries The Passing Bells (2014), the third series of the ITV drama Victoria (2019), and the first series of Knightfall (2017) on History, Bridgerton (2020) on Netflix, and The Larkins (2021), also on ITV.
Early life and education Bartlett was born in Fulham and grew up on Walham Grove. Her parents Stephen and Sharon are artists, and she has two sisters and a brother. Her grandfather was born in Calcutta. The family lived between London and Romney Marsh on the Kent coast.
Prior to acting, she took up ballet to help her coordination after a dyspraxia diagnosis and attended Tring Park School for the Performing Arts in Hertfordshire. She switched to drama and went on to train at the Guildford School of Acting, graduating in 2013.
Career Bartlett landed her first major role in The Passing Bells, a 2014 BBC One World War I television drama. She had a guest role in the Doctor Who series 8 episode "Robot of Sherwood". She played the recurring roles of Sophia and Keren Smith in Da Vinci's Demons and Poldark respectively.
In 2016, Bartlett appeared in the sixth season finale of the HBO series Game of Thrones, "The Winds of Winter" as a member of House Frey, then revealed to be Arya Stark in disguise. She starred as Princess Isabella in the first season of the History series Knightfall.
Bartlett was cast as Abigail Turner in the 2019 third season of Victoria. The following year, Bartlett appeared as Siena Rosso, an opera singer with a clandestine relationship with Jonathan Bailey's character Anthony Bridgerton in the Netflix historical fiction series Bridgerton.
In 2021, she was cast as Mariette in The Larkins, the eldest of the Larkins children, whom Catherine Zeta-Jones played in the previous adaptation. She revealed in 2022 that she would not be returning for the second series and her character was replaced by Joelle Rae. It was later revealed that Bartlett lodged a formal complaint against co-star Tok Stephen, but it was not upheld, leading to her departure.
In 2023, she played Constance Neville She Stoops to Conquer by Oliver Goldsmith at the Orange Tree Theatre, Richmond.
Personal Life Bartlett married Australian businessman Lachie Stewart in Italy in September 2026.
Acting credits
Film YearTitleRoleNotesRef.2014The CrossingEileenShort film2015RespiteShort film2024One Night in BathLaurenTBAArsenic LaneStella Alfonsi2026F*ck Valentine's DayMickey
Television Year Title Role Notes Ref. 2014 Suspects Hannah Stevenson Episode: "Calling Card" Holby City Gabriella 'Gabi' Mendoza Episode: "The Spirit" Doctor Who Quayle's Ward / Maid Marian Episode: "Robot of Sherwood" The Passing Bells Katie 5 episodes 2015 Midsomer Murders Tina Tyler Episode: "A Vintage Murder" Poldark Keren Smith 3 episodes Da Vinci's Demons Sophia 6 episodes 2016 Game of Thrones Maiden Frey/Arya Stark (in disguise) Episode: 'The Winds of Winter" 2017 Knightfall Princess Isabella 10 episodes Versailles Mathilde Series 2; 3 episodes 2018 The Innocents Lil Episode: "Bubblegum & Bleach" 2019 Victoria Abigail Turner Series 3 (regular) 2020 Bridgerton Siena Rosso Series 1; 5 episodes 2021 The Larkins Mariette Larkin Series 1 2025 I, Jack Wright Bella Horrell Recurring role
Theatre Year Title Role Venue Notes/Ref. 2015 The Seagull Nina Zarechnaya Regent's Park Open Air Theatre 2016 Cyrano de Bergerac Roxane Southwark Playhouse 2019 While the Sun Shines Elisabeth Orange Tree Theatre2023She Stoops to Conquer Constance Neville Orange Tree Theatre
Music videos YearTitleArtistRoleNotesRef.2018If You Wanna Love SomebodyTom OdellGirl
Audio dramas YearTitleRoleNotesRef.2016Doctor Who: The Tenth Doctor AdventuresCora
Video games YearTitleRoleNotesRef.2022The DioField ChronicleIzelair WiganEnglish version
Awards and nominations Year Award Category Nominated work Result2015NewFilmmakers Los AngelesBest Performance, DramaThe Crossing 2021 Screen Actors Guild Awards Outstanding Performance by an Ensemble in a Drama SeriesBridgerton align="center"
References
External links