questionText: To ask the Secretary of State for Environment, Food and Rural Affairs, with reference to the Environmental Improvement Plan, published 1 December 2025, what assessment she has made of the potential impact of the new PM2.5 target on (a) the number of Clean Air Zones in local authority areas, (b) the charges and scope of existing zones and (c) other measures required to reduce car use by (i) central and (ii) local government.
answerText: Clean Air Zones have been introduced to reduce local roadside nitrogen dioxide concentrations from transport. We are committed to reducing air pollution from all sources and using the most effective policy tools to do so.
heading: Clean Air Zones