The gas industry paid a lobbying firm more than £200,000 to set up and run a parliamentary group urging ministers to back new fossil fuel projects.
The All-Party Parliamentary Group (APPG) on hydrogen, made up of 17 MPs and Lords, has repeatedly lobbied the government to support “blue hydrogen”, which is made from natural gas, and for “hydrogen-ready boilers”, which burn natural gas.
Both technologies have been criticised by scientists, who say they are a distraction from proven low-carbon alternatives to fossil fuels based on renewable energy.