London air quality improved by Ulez and Lez - report | BBC News

The researchers said the introduction of the Lez helped to reduce particulate matter (PM10) in Greater London by 13% between 2008 and 2013, compared to between 2003 and 2007.

Nitrogen dioxide levels had also fallen by 18.4% in 2019 following the launch of Ulez in central London, compared to the period between 2016 and 2018, according to the analysis.

More evidence that low emissions zones work!