ULEZ massively reduced the amount of NO2, which is a trigger for asthma. It also seems to have reduced the hospital admissions for heart related emergencies. S

ULEZ massively reduced the amount of NO2, which is a trigger for asthma. It also seems to have reduced the hospital admissions for heart related emergencies. Sources: https://www.bbc.com/news/articles/c75q9d2pqyeo https://www.bbc.com/news/articles/c75q9d2pqyeo https://www.theguardian.com/environment/2026/jun/12/emergency-hospital-admissions-reduced-london-t-charge-ulez-air-quality https://www.theguardian.com/environment/2026/jun/12/emergenc...