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        • Empower communities to look after their local rivers:

          We mobilise thousands of volunteers every year, working along the riverbank to transform neglected rivers into areas that everyone can use and enjoy.

        • Restore the capital’s network of rivers through the power of nature

          We work to clean and green the capital’s 400-mile network of rivers through innovative solutions to boost biodiversity and restore nature.

        • Build a climate resilient London

          We help to build more engaged communities and healthier rivers better able to adapt to the impacts of climate change, now and into the future.

        • Empower communities to look after their local rivers
          We mobilise thousands of volunteers every year, working along the riverbank to transform neglected rivers into areas that everyone can use and enjoy.

        • Restore the capital’s network of rivers through the power of nature
          We work to clean and green the capital’s 400-mile network of rivers through innovative solutions to boost biodiversity and restore nature.

        • Build a climate resilient London
          We help to build more engaged communities and healthier rivers better able to adapt to the impacts of climate change, now and into the future.

        • Improving Rivers
          • Backwater restoration in the Maidenhead to Teddington catchment
          • Bathing waters – Reclaim Our Rivers
          • Cator Park, London Borough of Bromley
          • Understanding our rivers through connecting communities to waterways – Catchment Partnerships
          • Chinbrook Meadows Wetlands
          • Community Action for the Cut
          • Greenwich Natural Flood Management (NFM) Project
          • Marsh Dykes & Thamesmead Catchment Improvement Project
          • Oxford Rivers Project
          • Quaggy Habitats – Capel Manor Project
          • Queensmead Recreation Ground, London Borough of Bromley
          • Rewilding the Rom
          • River Beck Restoration
          • River Biodiversity Net Gain Units
          • Road run-off
          • South Essex Catchment Partnership
          • The River Ravensbourne and Glassmill Pond
        • Connecting Communities
          • Beckenham Place Park East – River Ravensbourne
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          • Plasticblitz
          • Action for Silk Stream
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Plastic Pollution

Londoners rally to measure plastic’s hidden impact on the Thames

Thousands of wet wipes flushed down toilets are shedding plastic into the river and changing the shape of the riverbed    Date of release: Monday…

Published 26th February 201819th April 2018 Published in Media Releases

Still water bottles one of the worst plastic pollutants in the River Thames, says Thames River Watch report

As 2,500 single-use plastic bottles are found in just one day, Hugh Fearnley-Whittingstall joins Thames21’s call for a deposit return system. Date of release: 25…

Published 25th January 201716th October 2017 Published in Media Releases

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  • Thames21’s response to Thames Water’s pollution incidents
    Recent figures published in The Times have shown that Thames Water was responsible for almost a third of the water sector’s most harmful pollution incidents in 2025. A Thames21 spokesman said: “The scale of serious pollution incidents linked to Thames Water is deeply...

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Thames21
THAMES21

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The City of London,
Guildhall,
Aldermanbury Street,
LONDON EC2V 7HH

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The City of London,
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PO Box 270,
LONDON EC2P 2EJ

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Navigation Road (off Gillender Street),
LONDON E3 3JY

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Registered Charity number: 1103997

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