Air quality: provisional common framework
How the UK government and devolved governments propose to work together in air quality policy areas.
▤ Verbatim text from source document
This command paper sets out how the UK government and devolved governments propose to work together on policies that aim to reduce harmful emissions and concentrations of air pollutants that can damage human health and the environment. (This includes national emission ceilings and ambient air quality.)
The provisional common framework has received ministerial approval from all 4 governments.