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Use the map to view annual mean nitrogen dioxide concentrations measured by diffusion tubes across your borough, and discover businesses that have a Local Authority environmental permit. For automatic monitoring data visit the London Air website a link is available on the 'How to get more info' page. To search for businesses that have a Part A environmental permit issued by the Environment Agency go to 'what's in your backyard?' on the Environment Agency website, a link is available on the 'Industrial pollution control' page. For more information on industrial pollution including permit application forms visit the 'Industrial pollution control' page.

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Find out about action being taken at international, national, regional and local level.