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'Most-improved' rivers revealed by Environment Agency

A list of the 10 most-improved rivers in England and Wales has been released by the Environment Agency.

The list includes the River Wandle in London - which was officially declared a sewer in the 1960s - the River Nar in Norfolk and the River Darent in Kent.

Ian Barker, head of land and water at the agency, said Britain's rivers were "the healthiest for over 20 years".

Laura Yates reports.

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