Customers will see no change to their existing bills as they have the freedom to choose their individual electricity supplier, irrespective of which group owns the network. The deal will more than double the number of people served by London Electricity's network to 5.3m from two million, and add 54,000 miles to its 18,000-mile network, or 15% of Britain's total coverage-The purchase, which could be concluded by the year-end, needs approval from both British and European regulators.