The UK has been given a "final warning" by the European Commission over breaches of air pollution limits.
http://www.bbc.co.uk/news/uk-politics-38980510
https://www.theguardian.com/environment/2017/feb/15/european-commission-issues-final-warning-to-uk-over-air-pollution-breaches
Sky News (vid)
http://www.juicebrighton.com/news/uk-news/european-commission-issues-final-warning-to-uk-over-pollution/