Who supplies electricity to Londoners?

11 September 2012: A recent parliamentary question highlights the extent the Londoners continue to use the local energy supply company EDF Energy (who took over London Electricity fully in 2006) as their electricity supplier. The response reports on data from August 2010 and  indicates that EDF Energy has a market share of 74% of London’s electricity market. In terms of dual fuel contracts, British Gas holds the largest market share in London across the ‘big six’ at 40%.