The Government Says

Particles in the Environment Annual Review - Update Q3 and Q4 2025

Particles in the Environment Annual Review - Update Q3 and Q4 2025
Local copy of Particles_in_the_Environment_Update_for_Q3___Q4_2025.pdf

https://www.gov.uk/government/publications/particles-in-the-environment-annual-review-update-q3-and-q4-2025

seen at 18:30, 6 February in Transparency and freedom of information releases.