Figures show the numbers of licenced diesels rose by 29% from 2012-15, despite warnings over their contribution to illegal levels of air pollution

Diesel vehicles have taken a record share of the market on London roads in recent years, despite warnings blaming them for contributing to the capital’s illegal levels of air pollution.

Sadiq Khan, the new mayor of London, has been lobbying for a diesel scrappage scheme, a policy that was backed by his predecessor, Boris Johnson, as a way of tackling the illegal high nitrogen dioxide (NO2) levels caused by diesels.

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Source: Guardian Environment