Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, what assessment he has made of the financial merits of placing the World Health Organisation guidelines on air pollution into UK law.

We will consider the World Health Organization (WHO) air quality guidelines when setting any new air quality targets, including those currently being set through the Environment Act 2021 for PM _2.5. These WHO guidelines were considered alongside wider aspects such as feasibility and costs to society of achieving new target levels. We are currently consulting with stakeholders on new PM _2.5 target proposals.