Skip to content
logo
  • logo
  • About us
        • About us
        • Contact Us
        • Jobs & Volunteer Positions
        • Our Funders
        • Equality, diversity and inclusion
        • Trustees
  • What we do
        • What we do
        • Improving Rivers
          • Backwater restoration in the Maidenhead to Teddington catchment
          • Bathing waters – Reclaim Our Rivers
          • Cator Park, London Borough of Bromley
          • 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 River Ravensbourne Volunteering Programme
          • Become a Citizen Scientist
          • Chestnuts Field
          • EMPOWER Rivers
          • Plasticblitz
          • Action for Silk Stream
          • Thames Connections
          • Thames River Watch
          • The Roding Rises
        • Education and Training
          • Leading Action for Healthy Rivers: Thames21’s flagship training course
          • Citizen Science
  • Support us
        • What you can do
        • Volunteer Events
        • Corporate partnerships
        • Corporate Team Days
        • Protect Rivers
          • Get Trained
            • Learn how to Lead a Waterway Event
          • Become a Citizen Scientist
          • Form a River Action Group
        • Join A Campaign
          • London Rivers Week 2026
          • In The Drink: tackling plastic cups
          • Past Campaigns
            • Taking action against plastic in wet wipes to protect our rivers
        • Support Us
  • Volunteer Events
  • Donate now

Citizen Science

River Litter Detectives – Bishop’s Park

BOOK YOUR PLACE NOW Come along and join Thames21 as a river citizen scientist on the River Thames. We will collect the litter we find…

River Litter Detectives – Broomhouse Dock

Book your place here Come along and join Thames21 as a river citizen scientist on the River Thames. We will collect the litter we find…

River Litter Detectives – Bishop’s Park

BOOK YOUR PLACE NOW 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…

Join the Eel Force on Ravensbourne and Brent river catchments

Press Release: June 21 Volunteers are being invited by Thames21 to train to become members of a citizen science Eel Force on the Ravensbourne and…

Published 21st June 202115th July 2021 Published in Media Releases, Thames 21

Lockdown River Resources

We know how much you love your rivers, and how much you’re missing them during lockdown. We’ve been regularly sharing inspiring river-related resources on Facebook, Twitter…

Published 3rd June 202019th January 2021 Published in Blog

More than 27 000 single-use plastic bottles removed from the Thames in past 12 months

Environmental groups call for action following Thames21’s Big Bottle Count Date of release: 28 October 2019 London’s largest mass census of river plastic, the annual…

Published 28th October 201918th February 2020 Published in Latest news, Media Releases

Thames21 wins prestigious award for its plastic monitoring programme

Thames21’s plastic monitoring citizen science project won a prestigious City award last night, less than a week after it released new data revealing the summer…

Published 26th September 201810th December 2018 Published in Latest news

Thames River Watch recognised in Evening Standard awards

Thames21’s Thames River Watch project was recognised in the Evening Standard Business Awards last night. Tideway, the company building London’s super sewer, won the Corporate…

Published 28th June 201812th July 2018 Published in Latest news, Thames River Watch

Londoners urged to take back their rivers during London Rivers Week 2018

‘Massively increased opportunities’ for Londoners to explore and protect their rivers through collecting key data and joining clean up events Saturday 23 JUNE – Sunday…

Published 18th June 201818th June 2018 Published in Media Releases, Thames 21

Posts navigation

Older posts
Newer posts

Latest News

  • Hand wearing a blue glove holds a water sample positioned between two Hanna checkers in a nature background
    Water quality data collected by volunteers used to fix sewage pollution
    In 2024, volunteers from the River Ching Action Group discovered a massive spike in the concentration of ammonia during their regular water quality testing. They passed the data on to the Environment Agency and Thames Water, and...
  • Events Diary

    Upcoming Events

    Notice
    There are no upcoming events.

    Follow Us

    Follow us on Facebook
    Follow us on Twitter
    Follow us on Instagram

    Donate

    Donate now

    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

    Contact us


    Registered Charity number: 1103997

    • Home
    • Get Involved
    • Support Us
    • Latest news
    • Sign up for our e-news!
    • Media enquiries
    • Publications
    • Privacy Policy