An English actress, she gained prominence for her role in the cult sci-fi series "Doctor Who," becoming the first woman to portray the Doctor. She trained at the Guildhall School of Music and Drama, graduating in 2005. Her breakout film role came in "Venus" (2006), earning critical acclaim. She has since appeared in various films and TV series, including "Broadchurch." Known for her versatility, she continues to be a prominent figure in both television and film.