The Greater London Authority published a report in 2010, which detailed that an estimated 4,267 premature deaths in London in 2008 could be attributed to long term exposure to fine particles (PM2.5). The City of London has some of the worst air quality in the country. This is primarily due to the density of development and its geographical location.
All local authorities in the United Kingdom are required to assess air quality and identify areas where it is unlikely to meet objectives set by the Government. The objectives have been set at levels at which minimal effects on human health are likely to occur. Air quality in the City does not meet the objectives for both annual average and hourly average nitrogen dioxide, and daily average particulate matter (PM10). As a consequence, the City has been declared an Air Quality Management Area for these two pollutants.
The City of London Air Quality Strategy focuses on action to reduce nitrogen dioxide and course and fine particles (PM10 and PM2.5). The measures outlined, along with those in the Mayor‘s Air Quality Strategy, will improve air quality in the City. However, the proposed action will not be sufficient to meet the Limit Value for nitrogen dioxide. This requires coordinated national action.
NOx emitted in the City of London
The anticipated relative proportion of emissions of NOx, from vehicles and gas boilers in the City during 2011, is shown in the pie chart below. A very similar picture is predicted for 2015.
Source of NOx in the City, 2011
Source - “City of London Air Quality Strategy 2011-2015”