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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.

        • a group volunteers in waders walking through a shallow river on a sunny day using sticks to help them balance
        • Working together to improve our rivers

          We deliver a wide range of projects across London and the Thames Basin to restore, protect and improve our rivers for people and wildlife. Explore some of our key projects and programmes

        • 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.

        • Working together to improve our rivers
          We deliver a wide range of projects across London and the Thames Basin to restore, protect and improve our rivers for people and wildlife. Explore some of our key projects and programmes.

        • 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 – PROJECT COMPLETED
          • Community Action for the Cut – PROJECT COMPLETED
          • Greenwich Natural Flood Management (NFM) Project
          • Marsh Dykes & Thamesmead Catchment Improvement Project
          • Oxford Rivers Project
          • Quaggy Habitats – Capel Manor Project – PROJECT COMPLETED
          • Queensmead Recreation Ground, London Borough of Bromley
          • Rewilding the Rom – PROJECT COMPLETED
          • River Beck Restoration
          • River Biodiversity Net Gain Units
          • Road run-off
          • South Essex Catchment Partnership
          • The River Ravensbourne and Glassmill Pond – PROJECT COMPLETED
        • 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 Winners Video
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River Lea

Enfield Council and Thames21 launch major river restoration project

Date of release: June 22 Residents in Enfield are being given the chance to tackle river pollution and the effects of climate change as part…

Published 22nd June 202110th July 2021 Published in Latest news, Media Releases

Thames21 rewilds one of UK’s most polluted waterways

Thames21 staff and volunteers will install nearly 300 square metres of floating reedbed into London’s second river, the Lea, this autumn. Reedbeds will be created…

Published 5th September 20185th September 2018 Published in Latest news

International Day of Women and Girls in Science – a day in the life

By Rosie Nelson, Community Modelling Officer at Thames21   I’m an environmental scientist with the rather elusive job title of ‘Community Modelling Officer’, where no…

Published 11th February 201811th February 2019 Published in Blog

A new reedbed in your community – your vote counts!

Date of release: Monday February 6, 2017 Thames21, London’s leading waterways charity, is asking the public to choose the location of five new reedbeds for…

Published 6th February 2017 Published in Media Releases
River Lea water testing

River Lea water testing

We’ve now finished analysing the water samples taken on the main tributaries of the Lea – Salmons Brook, Pymmes Brook, the Moselle, Dagenham Brook, Cobbins…

Published 8th December 201130th April 2013 Published in Latest news, Love the Lea

Latest News

  • Five-year action plan launched to improve the River Thames and its tributaries from Maidenhead to Teddington 
    Environmental charity Thames21 and its partners have launched the Maidenhead to Teddington Catchment Action Plan 2026–2031 – a collaborative plan setting out an ambitious vision to restore the Thames and its tributaries between Maidenhead and Teddington. Developed through the Catchment Based Approach (CaBA),...

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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

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Registered Charity number: 1103997

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