Salt Union Ltd is Britain's largest supplier of natural rock salt used for road de-icing. The company works in partnership with local authorities and highways agency contractors across Britain, to supply salt and provide advice and practical solutions for the safe storage and spreading of rock salt.

Exactrak is a unique web based tracking and monitoring system for specialist municipal and highways maintenance vehicles, including gritters, gully suckers and refuse trucks. Exactrak is the only monitoring device that interfaces with the control systems on vehicles, so that fleet managers know not just where the vehicle has been but exactly what it was doing.

DeepStore is a records management and artefacts storage company located in the protective void space of the mine. The naturally stable atmospheric conditions underground make it the perfect place for preserving paper and other items. DeepStore works with many organisations including The National Archives, The Bodleian Library, police forces, hospitals, local authorities and numerous large and small private businesses.

Winsford Rock Salt Mine in Cheshire opened in 1844 and is the oldest operating mine in the UK. The Mine is located 150 metres (over 500 ft) below the Cheshire Plain and produces over 1 million tonnes of Rock Salt annually. Roadways formed by the tunnelling method now exceed 135 miles and are increasing daily.