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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

River Litter Detectives – Broomhouse Dock

Book your place here Come along and join Thames21 as a river citizen scientist on the River Thames. We will collect the litter we find…

River Litter Detectives – Broomhouse Dock

Book your place here Come along and join Thames21 as a river citizen scientist on the River Thames. We will collect the litter we find…

Volunteers pick 27,000 wet wipes out of the Thames at Battersea

Date of release: September 24 Environmental charity Thames21 has found 27,400 wet wipes on just one site of the river Thames this week. Just under…

Published 24th September 202124th September 2021 Published in Latest news, Media Releases, Thames River Watch
volunteers at a Covid secure event

Thames21 activities to resume under strict guidelines: update 16 March

Thames21 are pleased to announce that we will resume riverside volunteering activity from March 29th with a group size limit of 15. In line with…

Published 16th March 202116th March 2021 Published in Latest news

Why wood is good for rivers

Carolina Pinto is our Brent Rivers and Communities Officer, working with the community in north west London to help bring the river back to life….

Published 2nd November 20204th October 2021 Published in Blog, Thames 21

Investing in London’s rivers will boost post-COVID recovery, report shows

LONDON RIVERS WEEK 2020 Saturday 24 October – Sunday 1 November New report shows rewilding promotes social inclusion as well as boosting flagship wildlife species London,…

Published 26th October 202026th October 2020 Published in Latest news, Media Releases, Thames 21

Thames21 activities to continue under safe guidelines: Update 16 October

Further COVID-19 restrictions will come into force in London this Saturday 17 October. These still allow organised activity for groups larger than six and up…

Published 16th October 202016th October 2020 Published in Latest news, Thames 21

New project to open up access to the Thames

Thames21 has received funding from City Bridge Trust to deliver an exciting new project, Thames Connections, which aims to make it easier for communities in low-income neighbourhoods…

Published 17th August 202017th August 2020 Published in Latest news

Hollywood star Zac Efron joins forces with Thames21 to highlight London’s plastic waste crisis

American actor and singer Zac Efron highlights the huge issue of London’s plastic waste problem as part of a new series on Netflix airing in…

Published 8th July 20206th February 2023 Published in Latest news

Coronavirus Plastic Pollution: what we can do about it

By Jo Pike – Communications Volunteer at Thames21 Jo Pike is our newest Thames21 volunteer, supporting the ever-busy comms department. She works part-time in a…

Published 30th June 202015th July 2020 Published in Blog

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  • 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

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    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

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

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    Registered Charity number: 1103997

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