Air pollution stunts children's lung growth and damages brain development. London's Ultra Low Emission Zone (ULEZ) was introduced in 2019 to reduce air pollution caused by traffic in Central London. In August 2023, it was extended to span all London boroughs.
Find out how the CHILL study is progressing.
Will air pollution increase on roads around the ULEZ?
Is London air cleaner since the introduction of 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.