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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 – 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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Thames21

Leonie Cooper opens London Rivers Week at Ladywell Fields, Lewisham

Nordic walking, river dipping and wading in the Ravensbourne were among the attractions at the launch of London Rivers Week on Sunday at Ladywell Fields,…

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

Huge new green space for Harrow: Stanmore Marsh Wetlands officially opens after restoration

Free fun community activities on June 28 as part of London Rivers Week Date of release: June 16 EVENT DATE: Wednesday June 28 2pm-3.30pm Stanmore…

Published 19th June 20178th June 2018 Published in Media Releases

Londoners urged to explore the capital’s forgotten rivers during London Rivers Week

Escape city stress by exploring ‘66 Shards-worth’ of newly rewilded rivers Monday 26 JUNE – Sunday 2 JULY London, UK – 13 June 2017: Londoners…

Published 14th June 201716th October 2017 Published in Media Releases
Chris Stafford

Obituary: Thames21 marks the death of Chris Stafford, a long-term volunteer and friend

Chris Stafford 1957-2017 With the three-week 3 Rivers Clean Up beginning this weekend across the Ravensbourne, Pool and Quaggy, catchment partnership officer Lawrence Beale-Collins mourns a well known volunteer…

Published 31st May 201716th October 2017 Published in Latest news

Give your views on a new wetland for Broomfield Park

  Thames21 and the London Borough of Enfield are investigating the creation of a new wetland in Broomfield Park. The project is at a very early…

Published 19th May 20178th June 2018 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

Book your half-term session at the Welsh Harp Centre with Thames21

Book your children in now for a great day out during the summer half-term! We have sessions at the Welsh Harp Environmental Education Centre, in Birchen…

Published 18th May 20174th September 2017 Published in Latest news

Flagship Welsh Harp Centre relaunches with community fun day on June 4

Community Fun Day: 4 June Time: 11-4 pm Location: Birchen Grove, London NW9 8RY A five-hectare nature oasis in north-west London is throwing its doors…

Published 15th May 201716th October 2017 Published in Media Releases

Thames21 leads IntCatch trip to ‘inspirational’ restoration in Norfolk

Blue winged olive mayfly will soon be back on a stretch of Norfolk river, members of a European-wide water quality monitoring project discovered on a recent trip to…

Published 5th May 201712th May 2017 Published in Latest news

Outfall safaris are tackling river pollution – and you can help as a citizen scientist!

Joe Pecorelli, the Zoological Society of London’s Europe Conservation Project Manager, tells us about work running across the capital to prioritise and map sources of…

Published 2nd May 201713th January 2022 Published in Blog

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  • Thames21’s response to new Environment Agency’s water quality data
    Only 14.3% of England’s rivers, lakes and coastal waters are in good ecological health, according to new figures released by the Environment Agency. It is clear that the way we manage our water systems must change. Improving the quality and overall health of...

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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: 

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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