Ulez expansion led to significant drop in air pollutants in London, report finds

Change equivalent to removing 200,000 cars for a year, with capital’s air quality improving at faster rate than rest of England

Levels of harmful air pollutants have dropped significantly since the ultra-low emission zone was enlarged to cover Greater London last year, according to a report from city hall.

Analysis covering the first six months since the Ulez expansion found that total emissions of nitrogen oxides (NOx) from cars across London were 13% lower than projected had the scheme remained confined to inner London, while NOx from vans was 7% lower.