Alerted by a barking sniffer dog, the officers wrench off a wooden wall panel to find a secret compartment full of illegal tobacco.
In another room, they pull at an electric radiator, which gives way to reveal another hidden chamber used to stash black market goods.
Dodgy shops selling counterfeit items, employing trafficked workers or washing money for crime gangs are a common feature of British high streets.
But while red flags like cash-only policies, unusually low prices and a lack of customers are fairly easy to spot, uncovering the full truth is far more difficult.
Owners of dodgy shops are attempting to evade
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