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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
          • Become a Citizen Scientist
          • Chestnuts Field
          • EMPOWER Rivers
          • Plasticblitz
          • Action for Silk Stream
          • Thames Connections
          • Thames River Watch
          • The Roding Rises
        • Education and Training
          • Citizen Science
            • Leading Action for Healthy Rivers: Thames21’s flagship training course
            • Welsh Harp Environmental Education Centre
        • What we do
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        • London Rivers Week 2026 Photography Competition
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ravensbourne

Join the Eel Force on Ravensbourne and Brent river catchments

Press Release: June 21 Volunteers are being invited by Thames21 to train to become members of a citizen science Eel Force on the Ravensbourne and…

Published 21st June 202115th July 2021 Published in Media Releases, Thames 21

Friends turn out in force for Chris Stafford Memorial Day

Chris Stafford Memorial Day A bench plaque was unveiled and tree planted in memory of Chris Stafford, river volunteer extraordinaire and the mainstay of much…

Published 28th March 201825th April 2018 Published in Blog
The group who trained for the Ravensbourne Outfall Safaris

Pollution and grumpy golfers: Adventures of the 2017 Ravensbourne Outfall Safari

Outfall Safaris, carried out by volunteers,  are a scheme to identify pollution in rivers caused when property drains are misconnected or cross connected. Here, Lawrence…

Published 21st November 2017 Published in Blog

Thames21 celebrates its volunteers at annual reception

“Corporate volunteering is about community action not just sponsorship” a key Thames21 partner told the charity’s annual reception on Thursday evening. Clyde Muir, Vice President,…

Published 13th October 201729th November 2020 Published in Latest news

Volunteer for new Outfall Safaris on the Ravensbourne & Ingrebourne

Would you like to help identify where misconnected drains are polluting rivers? Thames21, under the guidance of the Zoological Society of London, is offering the public the chance to…

Published 26th July 201716th October 2017 Published in Latest news

Ninth annual 3 Rivers Clean Up to focus on plastic awareness as well as blitz on balsam

PRESS RELEASE Date of release: May 19 2017 The damage plastic is causing to the environment, particularly waterways, will be one of the themes of the…

Published 19th May 2017 Published in Media Releases

Record volunteer turnout on the Ravensbourne

The largest number of volunteers Thames21 has ever had for a single day clean-up on any stretch of the Ravensbourne turned out at Manor Park,…

Published 21st March 201729th September 2017 Published in Latest news
Creekside Art Expedition – River Ravensbourne

Creekside Art Expedition – River Ravensbourne

CREEKSIDE ART EXPEDITION Saturday, 10 September 2016 from 10:30 to 14:30 Visual artist Edwin Mingard has been commissioned to create a public artwork as part…

Published 5th September 20165th September 2016 Published in Latest news, South East London

Latest News

  • London Rivers Week 2026 Photography Competition
    To mark London Rivers Week 2026, Thames21 is launching a photography competition celebrating the vital role that rivers play in the life of our city. The competition aims to highlight...
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    Thames21
    THAMES21

    Address

    Main Office location (& deliveries)

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

    Postal Address

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

    Contact us

    Satellite Office

    Satellite Office: 

    The Lock Office,
    Bow Locks,
    Navigation Road (off Gillender Street),
    LONDON E3 3JY

    Contact us


    Registered Charity number: 1103997

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