Mark Whittaker looks at Britain's degraded rivers - many are little more than concreted, straightened sewers devoid of wildlife and inaccessible to people. Will they ever be restored? Producer Jessica Mitchell
Repeated Sunday 9.30pm
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Mark Whittaker looks at Britain's degraded rivers - many are little more than concreted, straightened sewers devoid of wildlife and inaccessible to people. Will they ever be restored? Producer Jessica Mitchell
Repeated Sunday 9.30pm
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