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Highest air pollution in UK around Buckingham Palace

Buckingham Palace suffers from the highest level of air pollution in the country with almost four times the European legal limit.

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London has highest nitrogen dioxide levels in Europe

London has the highest NO2 levels of any European city Credit: ITN

The toxic gas nitrogen dioxide (NO2) can lead to respiratory disease and can cause the lining of the lungs to become inflamed.

The government is the subject of legal action after failing to deal with the high level of the toxic gas in the country's cities.

Most British cities have plans to reduce traffic fumes to within the legal limit by 2020, however London has insisted that it could not meet the NO2 targets set for it in 1999 until at least 2025.

London has the highest levels of NO2 of any European capital city and the UK has the highest proportion of zones breaching legal limits.

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