---

Air Pollution

How did I know that my right hon. Friend would be introducing that subject? I excised it from my speech because I knew he would. He is absolutely right, and he will have seen the assessment that came out just 10 days ago, which said everything he and I have been saying about the pollution caused by the third runway expansion at Heathrow. Whatever we think about the economy—as he knows, the assessment was not too hot on that either—it is a disaster for public health.

I do not decry the real progress on nitrogen dioxide that has resulted from the ultra low emission zone expansion. What the mayor has done has been really significant; the correlated reduction in admissions to hospital has been huge, and we really welcome that. But air pollution action must be targeted at hotspots. Even if the hotspots dipped below the 40 microgram legal limit, that would still be four times the World Health Organisation guidelines.