While training for the London Marathon in 2014, London Mayor Sadiq Khan then a British parliamentarian from the south London district of Tooting found himself gasping for air during runs and discovered he had developed asthma for the first time in his life.
Since becoming the capital’s mayor in 2016, the Labour Party politician has made cleaning up London’s air a top priority, through measures from electrifying its pollution-belching diesel buses to installing an advanced air quality monitoring system.
Last week, a Central London Ultra Low Emission Zone (ULEZ) that Khan launched in 2019 expanded to 18 times its initial