Matt Baker and Charlotte Smith head to the UK's longest and highest aqueduct, the Pontcysyllte Aqueduct in north Wales, and Joe Crowley investigates claims of threats to Britain's historic waterways. Show more
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Matt Baker and Charlotte Smith head to the UK's longest and highest aqueduct, the Pontcysyllte Aqueduct in north Wales, and Joe Crowley investigates claims of threats to Britain's historic waterways. Show more
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