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River Thames

🌿 Mindful Moments by the River: A Wellness Walk on Thames Foreshore

Join us for a unique wellness walk along the exposed Thames foreshore at low tide — a rare chance to explore the riverscape, slow down,…

Volunteers standing on the foreshore.

River Litter Detectives – Queenhithe

Book your place HERE! Come along and join Thames21 as a river citizen scientist on the River Thames. We will be collecting the litter we…

Volunteers standing on the foreshore.

River Litter Detectives – Queenhithe

Book your place HERE! Come along and join Thames21 as a river citizen scientist on the River Thames. We will be collecting the litter we…

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

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

Thames21 raises alarm about river sewage crisis

Thames21 helped raise the alarm about the UK’s river sewage pollution crisis last week – by contributing to a hard-hitting BBC documentary. Thames21 opened last…

Published 19th April 202119th April 2021 Published in Latest news, Thames 21

Obituary of Celia Hensman MBE: Thames21 founder

Celia Hensman was a woman of great charm and conviction, who used her formidable intelligence to create lasting, positive change for people and the natural…

Published 6th January 20215th February 2021 Published in Latest news

Latest river Thames survey confirms COVID-19 plastic impact

COVID-19 driving increase in single-use plastic pollution Date of release: 18 December 2020 London’s largest mass census of river plastic, the annual Thames River Watch…

Published 21st December 20205th January 2021 Published in Latest news, Media Releases

Thames21 volunteering activities update: 7 September

Thames21 StatementSeptember 2020 The safety, health and wellbeing of the public, our volunteers and our staff are of paramount importance to us. Our events and…

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

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

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  • Thames21 and the River Roding Trust launch water quality monitoring project on the lower Roding
    Environmental charity Thames21 and the River Roding Trust are working together on a groundbreaking programme to identify, test and fix the most damaging sewage and road run-off outfalls on a...
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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

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    Other addresses

    Satellite Office: 

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

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    Welsh Harp Environmental Education Centre:

    Birchen Grove, LONDON NW9 8RY

    Contact us


    Registered Charity number: 1103997

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