English actress best known for her television work, including her roles on As If and Hex.
She contacted an agent at age nine in hopes of becoming an actress; her first professional role was in the film The Higher Mortals in 1993.
She wrote "I want to act" on her bed in lipstick as a child, but her mother was upset and encouraged her to become a doctor or lawyer.
She is the daughter of English television journalist Alison Rooper.
She made her Hollywood debut in the 2006 film The Black Dahlia, which also starred Scarlett Johansson.