Spy Train Tracks Wirey Thieves

Using a thermal camera to track copper cable thieves.

UK - Network Rail said covert spy train patrols to deter metal thieves from the rail network are having an effect.

In the last year the price of copper has doubled and this year alone in the east there have been 72 serious incidents of cable theft, causing delays to more than 2,500 trains and costing the company more than £1m.

Look East joined Network Rail and the British Transport Police on a special spy train as they went on the hunt for thieves in Essex and Hertfordshire. (video)