Hunting ‘The Scorpion’: My mission to track down the gangs smuggling migrants in

This week Yvette Cooper pledged to go after the criminals behind the thousands of migrants who cross the Channel every year. She won’t find it easy and will be shocked by what she discovers, says Sue Mitchell, whose leads took her to corner shops in Nottingham and affluent suburbs in Belgium in her year tracking down some of Interpol’s most-wanted