<Tr> <Th> Partner (s) </Th> <Td> David Tennant (2005--07) </Td> </Tr> <Tr> <Th> Children </Th> <Td> </Td> </Tr> <P> Sophia Jane Myles (/ səˈfaɪ. ə /; born 18 March 1980) is an English actress, best known in film for portraying Erika in Underworld (2003), Lady Penelope Creighton - Ward in the live - action Thunderbirds film, Isolde in Tristan & Isolde and Darcy in Transformers: Age of Extinction, and has received critical acclaim for her television work, particularly as Madame de Pompadour in the Doctor Who episode "The Girl in the Fireplace" and Beth Turner in Moonlight . </P> <P> Myles was born in London . Her mother, Jane (née Allan), works in educational publishing, and her father, Peter R. Myles, is a retired Church of England vicar in Isleworth, West London . Her paternal grandmother was Russian, and Myles refers to herself as "half - Welsh, half - Russian". She grew up in Notting Hill and attended Fox Primary School . At the age of 11, she moved with her family to Isleworth and attended the Green School . Following success at her A-levels, she had been planning to study philosophy at Cambridge, but chose to pursue an acting career after being spotted by Julian Fellowes in a school play . </P>

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