UK gas producers and electricity generators may make excess profits totaling as much as £170 billion ($199 billion) over the next two years, according to Treasury estimates...
Bloomberg, August 2022

UK isolated as EU agrees windfall tax on energy firms. The levy could raise €140bn, and energy ministers also set targets to cut electricity use.
The Guardian, September 2022

Prime Minister Liz Truss has ruled out using a further windfall tax on energy companies to fund measures to help people with their gas and electricity bills.
BBC News, October 2022