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Diesels face £10 pollution charge

29 July 2014 Last updated at 22:49 BST

Plans to charge drivers of diesel cars about £10 to drive into central London to tackle high levels of air pollution, are being considered.

The levy would be on top of the current £11.50 congestion charge for driving into the centre of the capital.

London Mayor Boris Johnson wants the new Ultra Low Emission Zone (ULEZ) to be introduced by 2020.

Richard Westcott reports.