One hundred and fifty scientists, MPs and activists — Greta Thunberg among them — have written to Prime Minister Andy Burnham demanding a national inquiry into the unequal health impacts of air pollution in England. The core evidence is blunt: Institute for Fiscal Studies research shows lower-income areas persistently endure higher pollution levels, and minority-ethnic populations breathe air roughly 6% more polluted than that experienced by white populations. There is no dedicated UK mechanism to address this. The health consequences are not abstract. Freedom of information data obtained by campaign group Mums for Lungs reveals that across 11 English cities and areas — including London, Greater Manchester and Birmingham — more than 200,000 children were taken to hospital with breathing difficulties in 2025. Over 120,000 of those were babies and toddlers. In Manchester specifically, admissions of babies and toddlers surged from 653 in 2023 to 1,072 in 2025 — a 64% increase in two years. The letter lands with particular force on Burnham's desk because of his own record. As mayor of Greater Manchester in 2023, he scrapped plans for a clean air zone. Mums for Lungs explicitly flagged this decision as raising questions about whether sufficient action is being taken. Rosamund Adoo-Kissi-Debrah — whose nine-year-old daughter Ella became the first person in the UK to have air pollution listed on a death certificate — described the situation as a "failure of inaction by all the main political parties over so many years." The evidence for what works is already in hand. London's ultra-low emission zone has measurably improved air quality, with children's lungs growing bigger and stronger as a direct result. Yet new 2025 government data shows parts of London, Glasgow and Bristol still have illegal levels of air pollution. The regulatory regime is not keeping pace with its own standards. Defra's response is textbook deflection: air quality is improving "over the longer term," new targets will cut particle exposure by "nearly a third by 2030," and the department will work with local authorities. No commitment to an inquiry. No acknowledgement of the distributional injustice at the heart of the letter. The extraction pattern here is structural and geographic. Pollution sources — traffic, industry, wood-burning — cluster in lower-income and minority-ethnic areas. The health costs are borne by those communities in the form of childhood hospitalisations, stunted lung development, and chronic disease. The benefits of inaction — cheaper logistics, lower compliance costs, avoided political friction — flow to incumbent polluters and politicians who calculate that clean air zones lose votes. This is a textbook case of costs socialised downward and benefits captured upward. The question is whether an inquiry would generate new capability or merely produce another report. The IFS data and hospitalisation numbers already make the case. What's missing is not evidence but political will to impose costs on polluters and protect the populations who bear the burden. Twenty years of this trajectory means a generation of children in deprived areas growing up with permanently diminished lung capacity — a biological inequality that compounds every other disadvantage.
