12.5 GBP is a laughable sum as a pollution charge. Wonder if work was done to model public health costs as this price. Is it inflation indexed?
I doubt that public health costs of a single vehicle used for a single day add up to anywhere near that much - perhaps only 1% or less of that.
But I agree, it'd be nice if the charge was 100GBP per day and I was the only person on the roads.