National Grid Plc engages in the transmission and distribution of electricity and gas. The firm's businesses supply gas and electricity to various customers and communities. Its segments include UK Electricity Transmission, UK Electricity Distribution, UK Electricity System Operator, New England, and New York. The UK Electricity Transmission segment includes the high-voltage electricity transmission networks in England and Wales. The UK Electricity Distribution segment includes the electricity distribution networks of Western Power Distribution in East Midlands, West Midlands, and Southwest of England and South Wales. The UK Electricity System Operator segment is the Great Britain system operator. The New England segment is engaged in gas distribution networks, electricity distribution networks, and high-voltage electricity transmission networks in New England. The New York segment is engaged in gas distribution networks, electricity distribution networks, and high-voltage electricity transmission networks in New York.