Brompton factory
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Brompton: Inside a folding bike factory

British folding bike company Brompton Bikes has recently expanded its operations, moving into a larger factory in west London.

Around 80% of the 45,000 bikes it sells each year go overseas and over 1,200 parts go into the making of each bike.

The company's boss Will Butler-Adams gave our video journalist Dougal Shaw an exclusive tour, which he filmed on his smartphone.

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