The European Commission has threatened to take the UK to the European Court of Justice over air quality breaches.
The UK could end up paying as much as £300m in fines.
The government received a second and "final" warning from the commission after the levels of dangerous airborne particles, or PM10s, in London and Gibraltar exceeded EU limits.
The commission says high levels of PM10 may lead to serious health problems.
Or why not leave those who are elected to govern London, i.e. Boris, accountable to it? And that way, people in London can decide themselves how important an issue it is. As for the fine, what benefit does it give for even more money to leave the UK and be wasted by the EU?
I suppose the commission thinks it knows best though. "EU limits" and all that.