Air pollution stunts children's lung growth and increases the frequency of asthma attacks. London's Ultra Low Emission Zone (ULEZ) was implemented in 2019 to reduce air pollution caused by traffic in central London. It was extended in October 2021.
Find out how the CHILL study is progressing.
Will air pollution increase on roads around the ULEZ?
Children’s Health in London and Luton (CHILL) aims to independently evaluate whether the Ultra Low Emission zone is effective at reducing air pollution, and improving children's lung growth, and respiratory health.