ULEZ expansion cuts pollution in outer London, study confirms

Reducing the number of polluting road vehicles has reduced the amount of pollution in the air, concludes a  TfL and GLA study into the impact of expanding the ULEZ zone to the outer London boroughs.As the aim of expanding ULEZ was to reduce air pollution and reduce the health impacts of living in areas with poor air quality, this can be said to be a success.
However, as reports go, it’s only really saying what we already knew — fewer sources of pollution means less pollution. It