Christmas: for most of us, it's a time of joy and celebration. But for a new group of organised criminals, Christmas means opportunity. Retail crime and shoplifting have hit record levels in the last few years - and the festive season, including Black Friday, is when this issue is at its worst.

So when did shoplifting go from petty crime to serious business? When did retail criminals turn from hard-up addicts and opportunists, to gangs with getaway cars and balaclavas?

In this episode, Andy and Neil explore why shop theft has become so rife, and what needs to be done for the police to regain control of Britain's high streets. They hear from two experts on different sides of the problem: Cullen Mais, who was once the country's most prolific shoplifter, and is now reformed and working with retailers to catch thieves. And Lucy Mitchell from the New West End Company, which runs private security for many of London's busiest shopping streets.

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