I’m one of 600,000 Londoners who suffer from asthma. Four people are hospitalised every day because of #asthma caused by #AirPollution. That's why we’re committed to tackling London’s toxic air with bold measures like the Ultra Low Emission Zone. #LetLondonBreathe #WorldAsthmaDay pic.twitter.com/FzDvwBH4Wb

— Mayor of London, Sadiq Khan (@MayorofLondon) May 7, 2019