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Undated BBC handout photo of Game Of Thrones star Maisie Williams has taken a break from her role in the blood-thirsty epic to make a guest appearance in Doctor Who. PRESS ASSOCIATION Photo. Issue date: Monday March 30, 2015. The actress, from Bristol, was in Cardiff to film her part in the new series of the long-running BBC sci-fi show which will be on TV later this year. See PA story . Photo credit should read: Simon Ridgway/BBC/PA Wire

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