The deadly particles in London are now mostly invisible. If you live in London you'll die 20 years earlier. Great city, but I'm glad I'm not there any more. I used to hate having a nose full of black coming out of the northern line. London is rated as having the worst air pollution in Europe. They say about 50,000 people die per year in the UK because of bad air quality.
There's still some coal stations near cities in the UK though... even one near London. http://www.sourcewatch.org/index.php/Existing_UK_coal-fired_...