United Utilities Group PLC (UU) (LSE: UU.) is the UK's largest listed water business. The Group owns and manages the regulated water and wastewater network in the North West of England, through it subsidiary United Utilities Water PLC (UUW), which is responsible for the vast majority of the group's assets and profit.

United Utilities has its headquarters in Warrington with 9,000 employees. Its shares are listed on the London Stock Exchange and it is a member of the FTSE 100 Index.

Its water business is regulated under the Water Industry Act 1991.

United Utilities was created in 1995 by the merger of North West Water and Norweb. It sold its telecoms business, Your Communications in 2006, and Vertex in March 2007.

In December 2007, United Utilities sold its electricity distribution network to North West Electricity Networks, a joint venture between Colonial First State, which is part of the Commonwealth Bank of Australia, and US investment bank JPMorgan Chase. Electricity North West Limited became the licensed Distribution Network Operator for the north west of England as a consequence of the sale.

Source: Wikipedia