Heathrow expansion will boost air quality | Letters

The suggestion that the previous government failed to address questions surrounding air quality (Report, 20 October) does not reflect the progress that has been made on the issue since December 2015. Since then, the government’s air quality plan, updated modelling undertaken by Heathrow and an independent study by Cambridge University have all shown that baseline air-quality levels around the airport will have significantly improved by the time a new runway is built, as the nation’s