A new report by Imperial College London’s environmental research group estimated the number of premature deaths in London attributable to air quality was between 3,800 and 5,100 in 2024, a significant drop from 2019’s numbers of 6,400 to 8,000.
This new study used “a scientifically stronger approach” than previous efforts, researchers said. An earlier study estimated the number of premature deaths linked to air pollution in 2019 was 4,000.
Researchers also found that fine particulate pollution – extremely small particles that can have a serious impact on health – fell by 28% from 2019 to 2024.













