“I know what’s happening,” says Di Peter Brown of the South West Regional Organised Crime Unit. “But how do I turn it into evidence?” Slowly, carefully and without taking your eyes off the prize seems to be the answer, given over three episodes of the documentary Taken: Hunting the Sex Traffickers (Channel 4). It follows a three-year investigation, prompted by an anonymous letter to a police station in Gloucester, into a man called Mark Viner. He is suspected of being part of one of the estimated 4,500 organised crime gangs involved in money laundering, running brothels and trafficking the women working there.
The unit puts Viner under surveillance and painstakingly pieces the jigsaw together: the trips to Brazil and the return journeys with young