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
  • Get Involved
        • Volunteer With Us
        • Corporate Team Days
        • Get Trained
        • London Rivers Week 2026 Photography Competition Winners Video
  • Donate now

family friendly

Action for Silk Stream – Family Nature Walk & Pond Dipping

Join us for a fun and educational Family Nature Walk and Pond Dipping session at the beautiful Stanmore Little Common this summer holiday! Follow this…

Latest News

  • Thames21’s response to Thames Water’s pollution incidents
    Recent figures published in The Times have shown that Thames Water was responsible for almost a third of the water sector’s most harmful pollution incidents in 2025. A Thames21 spokesman said: “The scale of serious pollution incidents linked to Thames Water is deeply...

Events Diary

Upcoming Events

Aug 7
1:00 pm - 3:00 pm

Action for Silk Stream – Family Nature Walk & Pond Dipping

Stanmore Little Common
View Calendar

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