More and more people are being tricked into giving their bank details to fraudsters which can result in them being robbed of thousands of pounds.
The highly sophisticated scam starts with a phone call and ends with a courier being sent to the victim's house to take away their bank cards, and in some cases, other valuables.
Ria Chatterjee spoke to one victim in Essex who wanted to remain anonymous.
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Tencho Hristov ignored warnings and got trapped between barriers at Roydon in Essex.
The 6km bike track will include 130m of the South Circular near Kew Bridge.
The unfortunate officer was taken to a central London hospital for treatment and his condition is not life-threatening.