Welcome to Thames21

Thames21 is one of the country’s leading waterway charities. We work with communities across Greater London to improve our rivers, canals, ponds and lakes for people and wildlife.

Why not join the thousands of people each year that help us carry out our work? Last year, over 12,000 people got stuck in with us at a range of practical events across London. We have activities for everybody; if you don’t see an event listed for your local waterway or there is something else you would like to see us doing – let us know! Please see our calendar of events for opportunities to get involved.

If you are looking to book school groups in to our Welsh Harp Environmental Education Centre, please call 0207 515 3337 or fill out our online booking form.

Watch our 10th anniversary video here!

And check out the lovely video by the Londonist covering our Big Count event back in February