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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
          • 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
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        • London Rivers Week 2026 Photography Competition
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London Rivers Week

Londoners encouraged to discover their local rivers as festival returns

Londoners are being encouraged to reconnect with their local rivers as part of this year’s London Rivers Week 2026, marking a decade of connecting people…

Published 11th May 2026 Published in Media Releases

London Rivers Week 2026: Balsam Bash at Ham

Join our friends Thames Landscape Strategy for a free, friendly, hands‑on volunteer session helping to control Himalayan Balsam, an invasive plant that poses a threat…

London Rivers Week 2026: Tidal Tales – Walking Through Flux & Flow

Kicking off London Rivers Week, Thames21 will be going on a river walking adventure with artist Remiiya Badru from King Edward Memorial Park, in Wapping,…

London Rivers Week 2026: Brown Girls Summit Walk (WOMEN-ONLY WALK)

CLICK HERE TO REGISTER Join Brown Girls Summit for a free women-only guided walk as part of London Rivers Week 2026. Brown Girls Summit is…

London Rivers Week 2026: Evening stroll along River Crane at Mill Road, Twickenham

Join Friends of the River Crane (FORCE) for this fantastic evening walk along the River Crane. This FREE guided walk will start at Mill Road…

London Rivers Week 2026: Walk the Lambeth – Riverside Walk [FULLY BOOKED -WAITLIST AVAILABLE]

As part of London Rivers Week 2026, join Thames blogger Patricia Stoughton for a leisurely, free guided walk along a step-free section of the Thames…

London Rivers Week 2026: Guided Walk Exploring the Industrial History of the River Wandle [FULLY BOOKED]

Led by John Sheridan of the Wandle Industrial Museum, this FREE event starts at Mitcham, lets you view sections of the River Wandle, and finishes…

Call to ramp up joint action to get London’s rivers ‘climate-ready’

Policymakers, water companies, businesses, industry and the public in London will all need to work together help to protect London’s rivers in order for them…

Published 25th May 202326th May 2023 Published in Media Releases
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

Why wood is good for rivers

Carolina Pinto is our Brent Rivers and Communities Officer, working with the community in north west London to help bring the river back to life….

Published 2nd November 20204th October 2021 Published in Blog, Thames 21

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  • Londoners encouraged to discover their local rivers as festival returns
    Londoners are being encouraged to reconnect with their local rivers as part of this year’s London Rivers Week 2026, marking a decade of connecting people with the capital’s waterways. Running from Saturday 23rd May to Sunday 31st May, the festival, which main theme...

Events Diary

Upcoming Events

May 23
11:30 am - 2:00 pm

London Rivers Week 2026: Tidal Tales – Walking Through Flux & Flow

King Edward Memorial Park, Tideway Site, The Hwy, London, E1W 3HT
May 26
10:00 am - 2:00 pm

London Rivers Week 2026: Balsam Bash at Ham

Ham Street Car Park
May 26
11:00 am - 12:15 pm

London Rivers Week 2026: Walk the Lambeth – Riverside Walk [FULLY BOOKED -WAITLIST AVAILABLE]

Riverside Cafe
View Calendar

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Thames21
THAMES21

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Main Office location (& deliveries)

The City of London,
Guildhall,
Aldermanbury Street,
LONDON EC2V 7HH

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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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