The major UK power companies are still failing to meet the challenge of climate change, wildlife charity WWF has claimed… British Gas owner Centrica [came] top of the league for tackling carbon emissions and promoting energy efficiency. Scottish Power came second in the “UK Power Giants: Generating Climate Change” report, which judged the companies on their performance on greenhouse gas emissions, energy efficiency and renewable energies… At the bottom of the table, RWE npower and EDF Energy showed the least progress in addressing climate change issues… In a second survey, in which WWF evaluated the firms' views on 10 key issues of climate and energy policy, none scored highly on emissions reduction targets, nuclear power and the EU emissions trading scheme.