Re: This is the right direction!
I think you'll find Boris has legislated against that. We now use Great British Laws of Physics, not those puny ones previously imposed on us by the EU!!
I was, of course, referring to "fuel duty" specifically charged on fuel used for cars, buses etc. With EVs, yes, a heavier car will use more "fuel", but that can't be taxed at higher rates just for cars, it can only be taxed with the usual VAT and "green taxes" we all pay for all electricity usage.