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Working in British television and stage productions, she first gained prominence in a recurring role in Doctor Who, playing Tish Jones, sister of Martha Jones.
She garnered attention in American productions, beginning with a supporting role in the Tom Hanks comedy Larry Crowne, and starring roles on the short-lived television series Undercovers and Touch.
She earned critical acclaim for her performances in the British period drama Belle 2013 and the romantic drama Beyond the Lights 2014 , receiving numerous accolade nominations from critics worldwide.