Born: 29th January 1988
Episodes Broadcast: 2011-2014

Born in Wales, Catrin Stewart was interested in performance from a young age, and began attending drama classes when she was ten years old. Having already made her television debut in the 2003 telefilm Hearts Of Gold, she joined the National Youth Theatre of Wales when she was sixteen, and later attended drama school. Other early credits included episodes of Casualty and Misfits. In 2011, Stewart joined Doctor Who to play Jenny Flint, the partner of Silurian detective Madame Vastra, in A Good Man Goes To War. She would return to the character for three further stories -- and a Children In Need mini-episode -- opposite Matt Smith's Eleventh Doctor. Stewart's last television appearance as Jenny came in 2014's Deep Breath, the debut adventure for Peter Capaldi as the Twelfth Doctor.

Stewart subsequently had a recurring role in the comedy-drama Stella, and starred in the crime drama Bang. Having attracted rave reviews for her lead performance in a 2012 production of Romeo And Juliet, she joined the Royal Shakespeare Company for a year in 2015. In 2017, Stewart began appearing in Doctor Who audio dramas for Big Finish Productions, starting with Truant for The New Adventures of Bernice Summerfield. She then reprised Jenny for a new audio range called The Paternoster Gang beginning in 2019. During the Twenties, Stewart was one of the main castmembers in the Welsh-language drama Cyswllt.