ClientEarth says this is a landmark decision and paves the way for the European Commission to take legal action against the UK. London is one of 16 cities and regions in the UK included in the report.
The Supreme Court confirmed that because the Government is in breach of the EU Air Quality Directive “the way is open to immediate enforcement action at national or European level”.
However, before deciding whether to take further action toenforce the law, it has referred a number of legal questions to the Court ofJustice of the European Union.
More top news
George Michael died in December last year at the age of 53.
PC Keith Palmer, 48, stabbed by Khalid Masood while on duty in the grounds of the Palace of Westminster last Wednesday.
Those gathered on the bridge fell silent at 2.40pm - the time the first call was made to police exactly seven days ago.