English actress who had her breakout role as Anne Boleyn on Showtime series The Tudors. She also became known to TV audiences as Margaery Tyrell on the hit HBO series Game of Thrones.
She studied at the Webber Douglas Academy of Dramatic Art.
She played Irene Adler/Jamie Moriarty on Elementary.
She has a brother, Mark, and a sister, Samantha. In 2011 she became engaged to Anthony Byrne.
She had a minor supporting role in the 2011 film Captain America: The First Avenger with Chris Evans.