Stuart Humphreys

National Grid Electricity Transmission Plc engages in the business of ownership and operation of regulated electricity transmission networks in Great Britain. The company was founded on April 1, 1989 and is headquartered in London, the United Kingdom.

National Gas Transmission Plc engages in the natural gas transmission and distribution services. It operates through the Gas Transmission and Metering segments. The Gas Transmission segment includes network in Britain and liquefied natural gas storage activities. The Metering segment provides regulated gas metering activities in the UK, together with corporate activities. The company was founded on April 1, 1986 and is headquartered in Warwick, the United Kingdom.

National Grid Gas Holdings Ltd. operates as an investment holding company. The company is headquartered in London, the United Kingdom.

National Grid Interconnectors Ltd. engages in transmission of electricity. The company is headquartered in London, the United Kingdom.

Britned Development Ltd. is a venture capital and British innovation company for the energy industry. The joint venture company is based in London, UK and is a subsidiary of National Grid Partners (NGP), which was created by National Grid to advance the energy systems of tomorrow. The company focuses on connecting people to the energy they use safely, reliably and efficiently.

National Grid Grain LNG Ltd. engages in the extraction of crude petroleum. It operates a liquefied natural gas (LNG) terminal; and provides primary and secondary capacity, and truck and ship reloading services. The company was founded on June 18, 2002 and is headquartered in Rochester, the United Kingdom.

National Grid (US) Holdings Ltd. provides business support services. The company was founded on July 18, 1991 and is headquartered in London, the United Kingdom.

National Grid Holdings One Plc provides electricity and gas distribution services. The company is headquartered in London, the United Kingdom.

National Grid Holdings Ltd. owns and operates a high-voltage electricity transmission network services. The company is headquartered in London, the United Kingdom.