“Britain’s climate advisers, the Committee on Climate Change (CCC), has recommended in a letter to government that it should commit to reducing greenhouse gas emissions by 81% by 2035 in its upcoming budget next month.”
Britain’s climate advisers urge steeper emissions cut target for 2035 | Reuters
This comes from egotistical thinking. They still think they are the most impactful nation on the planet, or they plan to bomb China back to the Stone Age. Either way, it is pure ego.