Key facts
- London's Ultra Low Emission Zone (Ulez) has led to significant improvements in children's lung health.
- Air pollution is a major global health issue, causing millions of premature deaths annually.
- Despite existing solutions, cities worldwide face strong opposition and hesitancy in implementing clean air policies.
- London's Ulez has drastically reduced nitrogen dioxide levels since its introduction.
- Other cities like Bogotá, Nairobi, Sofia, and Melbourne are implementing or considering clean air measures.
Ten years after a personal health crisis related to London's toxic air, advocate Alastair Harper sees significant progress. A new study from Queen Mary University London indicates that children's lung health has improved since the implementation and expansion of London's Ultra Low Emission Zone (Ulez). Introduced by Mayor Sadiq Khan in 2019 and subsequently expanded, the Ulez charges polluting vehicles and has drastically cut nitrogen dioxide levels.
Globally, air pollution remains a critical issue, causing an estimated 7 million premature deaths annually and contributing to a range of severe health problems, including respiratory illnesses, heart disease, stroke, and cognitive difficulties in children. Despite the availability of technological solutions and successful examples in cities like Paris and Bogotá, many urban centers worldwide encounter substantial opposition and political hesitancy when attempting to implement similar clean air measures.
While cities like Nairobi and Sofia are making strides with new air quality acts and low-emission zones, and Melbourne is exploring monitoring and potential restrictions, the path is often fraught with challenges. London's Ulez faced intense opposition, legal battles, and even personal threats against the mayor. The political impact was evident when the Labour party lost a key byelection in Uxbridge, with advisors attributing the loss to the Ulez, leading to subsequent rollbacks of similar plans in other regions like Greater Manchester.