They haven't Peter.
It's the usual knee jerk reaction...
I doubt any government, anywhere, will take a holistic view of the scenario...
Largely I suspect because it wouldn't actually prove very helpful. It's the cities that are suffering, air quality even in relatively small cities like Bristol has deteriorated to the point where it is causing serious health issues for many people.
Getting pollution out of cities is far more important than worrying about an overall distribution. The good news is that out in the country, we'll probably still be able to drive our grubby old Landys for a while yet, even if we have to leave them out of town when we go to the city
