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Edward Stourton profiles the Labour leadership contender, Owen Smith. \nMP for Pontypridd since 2010, Mr Smith is challenging Jeremy Corbyn, saying that he's not up to the job. \nA former colleague at BBC Wales - where Mr Smith worked as a journalist - describes him as bright and ambitious, sometimes exasperating, and someone who 'didn't know their place'. \nAnd an old family friend tells us his character is firmly rooted in the culture of the South Wales valleys.

Producers: Charlotte Pritchard and Laura Gray.