Alegrias1: What else would you have the UK do if it fully complies with international agreements and if, big if, it cuts emissions to 78% of 1990 levels by 2035, said to be an exacting target by international standards? We are constantly being reminded how insignificant the UK is on the world stage and, in respect of emissions, it is certainly true.
I agree with Katie59 that governments (at least democratic governments) can only go so far. Thereafter, it is up to individuals. As we have witnessed in the pandemic, people don't always do what they are told; and, as regards climate control, some of the elite don't practise what they preach.
Of course, there are those who would prefer we had a less democratic government to ensure its edicts were followed but even with a green dictatorship in Whitehall, we would not make a significant difference to global emissions.