questionText: To ask the Secretary of State for Environment, Food and Rural Affairs, what recent assessment she has made of the potential impact of clean air zones in Portsmouth on levels of air pollution in that city.
answerText: Portsmouth’s Class B Clean Air Zone has been operational since November 2021. Air quality data for 2022 was published in September 2023 as part of the 2022 National Compliance Assessment: https://uk-air.defra.gov.uk/library/annualreport/.
heading: Clean Air Zones: Portsmouth