The Prime Minister has described this report as one of the most significant she will receive as Prime Minister. Decisions we make as a result of this report will shape our future as a nation. Significantly, it lays out that not taking action will cost us. It will cost us to the tune of 2.3 percent of GDP by 2050—in other words, delaying action will make the decarbonising job harder and more expensive in the long run. So this is not only a blueprint for change; it is an opportunity for us not to squander. 