The National Emission Ceilings Regulations 2018. Comes into force 1st July. These Regulations implement in the United Kingdom Directive 2016/2284/EU of the European Parliament and the Council relating to national emission ceilings for certain atmospheric pollutants. This Directive implements at the EU level obligations under the United Nations Economic Commission for Europe 1979 Convention on Long-Range Transboundary Air Pollution and its 1999 Protocol to Abate Acidification, Eutrophication and Ground-level Ozone, which was revised in 2012.