Dominic Littlewood looks at the fake fire-resistant glass that was installed in schools, hospitals and churches across the UK and the fake supermarket reward cards that are leaving thousands deceived and disappointed. Officers also reveal the secret tunnels beneath a London high street.

Featuring the fake postage stamps being sold on high streets, fake toys that could leave children with lethal battery burns, the fake celebrity lip gloss that has horrific contents and the fake receipts deceiving buyers into paying over £400 for counterfeit trainers.