This blog below written by the Liberal Democrat candidate for the Mayor of London, Caroline Pidgeon. It's part of a series of blogs by candidates for London Mayor. We'll also be featuing blogs by Sadiq Khan (Labour), Zac Goldsmith (Conservative) and Sian Berry (Green Party).
London's air quality is one of the worst in Europe. Add your name to the thousands of people demanding clean air now.
Getting real about tackling London’s air pollution