Yes, I think the hon. Gentleman is right. Clean air zones play a vital role in that work. Sometimes all I need is the air that I breathe. Certainly, we all need and deserve clean air. He will know that Norwich is one of the cities that has already implemented a bus low-emission zone and that the Campaign for Better Transport has welcomed the themes to be addressed by the clean air zones, including the plans for local growth, air quality and health. It has said that these are
“sound principles to underpin transport and planning”.
He is right, however, that we need to do more on clean air zones, and we will consult on that. I am in weekly discussions with my colleagues in DEFRA accordingly. The key thing—if I might add this, Mr Speaker, at your discretion—is that it is really important that we not only have good, consistent national standards, but respect the local particularities of different places and cities, so the role of local government will be vital. These zones will not be vanilla flavoured. They will reflect local circumstances, but they must all work to high national standards.