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Sarah (not her real name) was just 12 when she and her older brother got caught up in a drug-dealing gang, after an abusive childhood.

Now 14, she told Â鶹ԼÅÄ Radio 5 live that she sometimes walked for up to three hours at a time to sell "the tiniest bit of weed".

There are 27,000 children aged between 10 and 17 in England who identify as being part of a gang, according to a report by Anne Longfield the Children's Commissioner for England.

This interview has been re-voiced by an actor.

This clip is originally from 5 Live Breakfast on Thursday 28 February 2019.