Highways England is using SmartWater on cables being laid along a 17-mile stretch of motorway between Sale and Rochdale to deter metal thieves.
A “brazen” scrap metal dealer has been jailed for 15 months after being found guilty of taking in stolen metal, including SmartWater-marked crematorium plaques which he cut up into pieces to disguise them.
One hundred vehicles have been stopped and checked during a National Metal Theft Day of Action.
Security at Southern Water sites has been beefed up thanks to an invisible security tagging system. Called SmartWater, the product has been sprayed onto generators, cables and other equipment to deter thieves.