The hon. Lady is absolutely right to talk about the importance of tackling air pollution with regard to lung health and other medical conditions. That is why we have been consistently working on this ever since I have been an Environment Minister, and air quality continues to improve. We are very conscious that the clean air strategy was welcomed by the World Health Organisation as being world-leading and something that it wanted other countries to pursue. The hon. Lady will well know that measures are being planned on air quality that will be in the forthcoming environment Bill.