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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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pollution

Food wrappers – the hidden microplastic!

Food wrappers – the hidden microplastic!

Sewage, microplastics and food packaging are among the top culprits impacting the Thames according to new findings from our Thames River Watch. Thanks to this new…

Published 13th July 201621st July 2016 Published in Latest news
people in canoes near a new reedbed

I built a reedbed!

By Guest Blogger Sheila Ozeer, Volunteer at Thames21 It was the event description that lured me in – it read: ‘Come down and help us…

Published 11th July 201629th September 2017 Published in Blog
River of Death, why fish died in the River Lea, and what can be done

River of Death, why fish died in the River Lea, and what can be done

Thousands of fish died in the River Lea last week after rain washed the accumulated pollution from East London’s roads into the river. The River Lea…

Published 27th July 201319th November 2015 Published in Blog, Latest news, Love the Lea, Sewage pollution, Sustainable drainage
Saving North East London’s rivers

Saving North East London’s rivers

These are exciting times for river friendly drainage. Our project to clean polluted water before it enters the Salmons Brook in Enfield is identifying sites,…

Published 2nd February 201330th April 2013 Published in Blog, Latest news, Love the Lea, Sewage pollution
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

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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

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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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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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