Ulez helped London cut road pollution faster than rest of UK, report says

London’s ultra-low emissions zone was controversially extended to all boroughs last summer. Photograph: Manuel Romano/NurPhoto/Shutterstock

Sadiq Khan has hailed what he said was remarkable progress in improving London’s air quality under his tenure as mayor, after a study showed roadside pollutant levels falling faster in the city than elsewhere in the UK.

The report, produced by the Greater London Authority (GLA) and Transport for London (TfL), said a good proportion of the improvement was the result of the ultra-low emission zone (Ulez), which was extended to all London boroughs last summer.