Court of Justice (Seventh Chamber) 4 March 2021, C-664/18 (European Commission v United Kingdom of Great Britain and Northern Ireland.)

JUDGMENT OF THE COURT (Seventh Chamber) 4 March 2021 (*) (Failure of a Member State to fulfil obligations – Environment – Directive 2008/50/EC – Ambient air quality – Article 13(1) and Annex XI – Systematic and persistent exceedance of the limit values for nitrogen dioxide (NO2) in certain areas of the United Kingdom – Article 23(1) – Annex XV – Exceedance period to be ‘as short as possible’ –