National Grid Plc engages in the transmission and distribution of electricity and gas. It operates through the following segments: UK Electricity Transmission, UK Electricity Distribution, UK Electricity System Operator, New England, and New York. The UK Electricity Transmission segment focuses on the high-voltage electricity transmission networks in England and Wales. The UK Electricity Distribution segment includes networks of WPD in the East Midlands, West Midlands and South West of England and South Wales. The UK Electricity System Operator segment deals with the Great Britain system operation. The New England segment is involved in gas distribution networks, electricity distribution networks and high-voltage electricity transmission networks in New England. The New York segment is composed of gas distribution networks, electricity distribution networks and high-voltage electricity transmission networks in New York. The company was founded in 1990 and is headquartered in London, the United Kingdom.