Border force at Heathrow
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UK crackdown on human traffickers

8 July 2014 Last updated at 20:00 BST

Specialist teams from the UK Border Force are being posted at every major port and airport around the UK to try and spot human traffickers and their victims.

Around 90,000 people arrive at Heathrow airport every day so spotting those at risk is a mammoth task, as Alison Holt reports.