Meet the cast of One Child

Who's who in the BBC drama about Chinese adoption?

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MEI (Katie Leung)

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Mei, a young astrophysics student adopted from China by Anglo-American parents when she was a baby, is asked to return to her birthplace Guangzhou when her birth mother, Liu Ying, desperately seeks her assistance in saving her son, Ajun

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Katie Leung is best known for playing Cho Chang in the Harry Potter film franchise. She also starred in Channel 4 drama Run, Poirot and Father Brown.

LIU YING (Mardy Ma)

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Mei’s mother Liu Ying gave her up for adoption under China’s One Child policy. Her son, Ajun, winds up in a spot of trouble and she reaches out to his sister for assistance.

Mardy Ma is a Chinese-born actress living in Los Angeles. One Child is among her first major roles.

AJUN (Sebastian So)

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Mei’s brother, Ajun, is facing a murder charge, much to the horror of his mother.

Relative newcomer So might seem familiar to CBeebies fans – he’s made quite a few appearances in Teacup Travels.

KATHERINE ASHLEY (Elizabeth Perkins)

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Katherine is Mai’s adoptive mother.

Yes, that is the mum from the Miracle on 34th Street remake and yes, that is the woman from Big. Perkins is a veteran of the silver and small screens, with roles in The Flintstones, Weeds and numerous other productions already under her belt.

JIM ASHLEY (Donald Sumpter)

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Jim is Mai’s adoptive father.

You may have most recently spotted him playing the Time Lord Rassillon in Doctor Who series nine finale Heaven Sent, but Donald Sumpter has quite a long film and TV CV. Some highlights include Our Friends in The North and Game of Thrones (he was Maester Lewin), as well as a recurring role on children’s drama The Queen’s Nose. Oh, and he was Being Human’s Kemp, too.

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One Child airs on BBC2 on Wednesday night at 9pm