UK Border staff play high-stakes hide and seek every day.
Today, the Immigration Minister Mark Harper visited the Port of Felixstowe, and he couldn't have timed it any better. Staff found a shipment of of 4 and a half million cigarettes on Sunday, worth in the region of £600,000 to the UK economy.
Criminal gangs often smuggle drugs, counterfeit items and stolen goods, all concealed to avoid paying tax and they find some pretty inventive ways of doing it. In coffee jars, rocking horses, sofas and even in hollowed-out electrical items.
This seizure wasn't the biggest, but border staff have found more illegally imported cigarettes in 2013 than they did at this point in 2012.
With Felixstowe being a target for smugglers of items both in and out of Britain, border staff have to try and keep up with changing tactics by criminals.