All our events and activities are open to communities.

Corporate groups, please book with Thames21 using our corporate volunteering page


Cray River – Balsam Blitz

51.441173, 0.149808

Himalayan Balsam, an invasive plant that damages our fragile river systems, it erodes the riverbanks, outcompeting native plants and grows readily in wet condition. Sadly, it has spread quite pervasively down many UK rivers like the Cray in Bexley.


Sands End River Clean Up & Litter Detectives

Broomhouse Dock SW6 3EH, Junction of Carnwath Road & Broomhouse Lane, Fulham

Book your place here  Do you want to help keep the River Thames clean and healthy? Join Thames21 at Broomhouse Dock on the 25th May...