| National Grid plc (National Grid) is engaged in the ownership and operation of regulated electricity and gas infrastructure networks in the United Kingdom and the United States. It also has interests in related markets, including electricity interconnectors, metering services, liquefied natural gas (LNG) facilities and property in the United Kingdom, LNG storage and transportation, unregulated gas transmission pipelines and home energy services in the United States. The Company's business operations are divided into segments, which include Transmission-UK, Transmission-US, Gas Distribution-UK, Gas Distribution-US, US Electricity Distribution & Generation and Non-Regulated Business and Other. On April 3, 2007, and August 15, 2007, the Company sold its UK and US wireless infrastructure operations respectively. On August 31, 2007, the Company sold its Basslink electricity interconnector in Australia. On August 24, 2007, National Grid completed the acquisition of KeySpan Corporation. |