Sabrina Bartlett is an English actress. In 2014, she made her television debut with one-time roles in Suspects, Holby City, and Doctor Who. That same year, she also played the role of Katie in 5 episodes of The Passing Bells. She next guest-starred in Midsomer Murders and played Keren Smith in 3 episodes of Poldark and Sophia in 5 episodes of Da Vinci’s Demons. In 2016, she appeared in an episode of Game of Thrones. The following year, she starred as Princess Isabella in the History series Knightfall. More recently, she became further known for starring as Abigail Turner in Victoria and Siena Rosso in Bridgerton.