National Grid Plc engages in the transmission and distribution of electricity and gas. It operates through the following segments: UK Electricity Transmission, UK Gas Transmission, U.S. Regulated, and National Grid Ventures and Other. The UK Electricity Transmission segment focuses on the electricity transmission networks in England and Wales and Great Britain system operator. The UK Gas Transmission segment includes the gas transmission networks in Great Britain and system operator in Great Britain. The U.S. Regulated segment involves gas distribution networks, electricity distribution networks, and electricity transmission networks in New York and New England. The National Grid Ventures and Other segment comprises all commercial operations in metering with a focus on investment and future activities in emerging growth areas. The company was founded in 1989 and is headquartered in London, the United Kingdom.