Sir Sadiq Khan says expanding London’s ultra low emission zone (Ulez) was “crucial” after a new study estimated deaths linked to toxic air in the capital fell by about 40 per cent in five years.
The Mayor of London extended the Ulez across inner London in October 2021, and to cover the whole of the city in August 2023, establishing the world’s largest pollution charging zone.
Vehicles which fail to meet minimum emissions standards, and do not benefit from exemptions, incur a daily £12.50 fee for entering the zone.
A new report by Imperial College London’s environmental research group estimates that premature deaths attributable to air quality in London was 3,800 to 5,100 in 2024, down from 6,400 to 8,000 in 2019.
This new analysis, which its authors say used “a scientifically stronger approach”, contrasts with previous research that estimated premature deaths linked to air pollution was 4,000 in 2019.
The Mayor of London extended the Ulez across inner London in October 2021
PA
Researchers also found that fine particulate pollution – extremely small particles that can have a serious impact on health – fell by 28 per cent from 2019 to 2024.
The report does not isolate the impact of Ulez or any other single policy.
Boosting air quality has been a key priority for Sir Sadiq since he took office in 2016.
In addition to introducing the Ulez in April 2019, other related measures include a scrappage scheme for older, more polluting vehicles, providing air quality filters in schools and increasing the number of electric buses.
Sir Sadiq said: “The evidence is now overwhelming and unarguable: the bold action we have taken in London has reduced pollution, improved public health and saved lives.
“From childhood asthma to dementia, we know what a wide range of illnesses are linked to air pollution.
“This latest data shows why expanding Ulez London-wide was even more important than we previously thought and is transforming lives right across our capital.
“The decision to expand the Ulez was not an easy decision, but it’s now proven beyond doubt that it was crucial to protect the health and lives of Londoners.
“However, I’m not complacent. Despite our incredible progress, there is still more to do.”
Jemima Hartshorn, founder of campaign group Mums for Lungs, said: “This research shows that big schemes like the Ulez really help clean up the air. And cleaner air means healthier Londoners.
“But every year thousands of Londoners die from air pollution. Londoners need more action, and so does the rest of the country.”
