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

To ask the Secretary of State for Environment, Food and Rural Affairs, how many air pollution monitors in London have been upgraded since 2016.

As part of the national network of monitoring sites that the Environment Agency manages on Defra’s behalf, 15 new or upgraded instruments have been brought into service across 12 air quality monitoring sites across London since 2016.

There are currently 19 air quality monitoring sites which are part of Defra’s national monitoring networks located in London. In addition to the national UK Air Quality monitoring networks, Local Authorities, businesses and academics carry out monitoring and modelling of air quality.