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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
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        • London Rivers Week 2026 Photography Competition
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London Rivers Week

London Rivers Week 2026: Walk the Lambeth – Riverside Walk

As part of London Rivers Week 2026, join Thames blogger Patricia Stoughton for a leisurely, free guided walk along a step-free section of the Thames…

London Rivers Week 2026: Guided Walk Exploring the Industrial History of the River Wandle

Led by John Sheridan of the Wandle Industrial Museum, this FREE event starts at Mitcham, lets you view sections of the River Wandle, and finishes…

Call to ramp up joint action to get London’s rivers ‘climate-ready’

Policymakers, water companies, businesses, industry and the public in London will all need to work together help to protect London’s rivers in order for them…

Published 25th May 202326th May 2023 Published in Media Releases
London Rivers Week

Photography competition puts focus on upcoming London Rivers Week

A photography competition, called #PictureBlueLondon, has been launched in celebration of London Rivers Week, which runs from October 23-31 – visit our full events list….

Published 4th October 20217th October 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

London Rivers Week showcases the benefits of rewilding rivers

More than 150 people took part in the launch of London Rivers Week in Thamesmead on Saturday 25 May and hundreds got involved in 45…

Published 6th June 2019 Published in Latest news, Thames 21

Call to rewild 100km of London’s rivers to help the city adapt to climate change

Press Release LONDON RIVERS WEEK 2019: Saturday 25 May – Sunday 2 June  London, UK – 15 May 2019: London is the most vulnerable city in western…

Published 15th May 201915th May 2019 Published in Latest news, Media Releases

London Rivers Week inspires nature-loving photography

London Rivers Week has inspired some stunning photography by marine biologist and wildlife filmmaker Matt Haworth.  His incredible pictures have captured some of the wildlife…

Published 20th June 201822nd June 2018 Published in Latest news

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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...
  • Events Diary

    Upcoming Events

    May 26
    11:00 am - 12:15 pm

    London Rivers Week 2026: Walk the Lambeth – Riverside Walk

    Riverside Cafe
    May 31
    12:00 pm - 1:30 pm

    London Rivers Week 2026: Guided Walk Exploring the Industrial History of the River Wandle

    Mitcham Tram Stop
    View Calendar

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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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