Skip to content
logo
  • logo
  • About us
        • About us
        • Contact Us
        • Jobs & Volunteer Positions
        • Our Funders
        • Equality, diversity and inclusion
        • Trustees
  • What we do
        • 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
          • 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 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
  • News
  • London Rivers Week
  • Get Involved
        • Volunteer With Us
        • Corporate Team Days
        • Get Trained
        • London Rivers Week 2026 Photography Competition
  • Donate now

Great British Spring Clean

River Clean-Ups: much more than picking up litter

As the destructive environmental effects of littering and plastic pollution become clear, people are increasingly taking constructive action. More than 17,000 clean-ups took place over…

Published 13th May 20195th June 2019 Published in Blog, Education

23 thousand wet wipes discovered on stretch of Thames river bank

Other plastic waste found included menstrual products and microplastic glitter A record 23,000 wet wipes were counted and removed from one stretch of the Thames…

Published 1st April 2019 Published in Latest news, Media Releases

Sign up to be Litter Heroes with Thames21’s events for Great British Spring Clean

Thames21 and our volunteer groups are giving you the chance to get involved with the Great British Spring Clean, which runs from March 2-4 –…

Published 21st February 20188th June 2018 Published in Latest news

Thames21 Badged Group reports huge amounts of plastic litter in Thames Estuary

Thames21’s latest Badged Group has cleared unprecedented amounts of plastic from the north side of the Thames Estuary. Last weekend the newly-accredited group, based in…

Published 19th January 201820th January 2018 Published in Latest news

Volunteers count record 4,350 single-use plastic bottles in a day

By Ian Lamont, Communications Manager A group of Thames21 volunteers has reset the record for the number of single-use plastic bottles found in one day…

Published 1st December 201728th April 2018 Published in Latest news

Thames21 volunteers embrace Great British Spring Clean

Hundreds of volunteers helped Thames21 at eight events the charity put on for the Great British Spring Clean last weekend, starting with 50 people who…

Published 6th March 201713th January 2022 Published in Latest news

Thames21 embraces Great British Spring Clean with 11 events on rivers across London

Date of release: Friday February 24 Londoners across the capital will don wellies and waders to spring-clean London’s rivers with Thames21 as part of the…

Published 24th February 20172nd October 2017 Published in Media Releases

Latest News

  • London Rivers Week 2026 Photography Competition
    To mark London Rivers Week 2026, Thames21 is launching a photography competition celebrating the vital role that rivers play in the life of our city. The competition aims to highlight...
  • 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