All our events and activities are open to communities.
Corporate groups, please book with Thames21 using our corporate volunteering page
River clean-up
Dollis Brook Toe-boarding removal project / vegetation management
Dollis Valley Estate Leeside, LondonBelow is an example of Himalayan Balsam: very pretty purple flowers but damaging to our native habitats, and it takes over anywhere the ground is...
5km Run Along The River
44 Stewart St, London E14 9HA 44 Stewart Street, London, United KingdomThames21 are partnering with GoodGym to host a 5km river run on Monday 22nd January. Come join us for a new year get together, starting...
Dollis Brook Toe-boarding Removal event series
Brook Farm Open Space Brook Farm Open Space, Car Park near Pavillion Off High Road, Barnet, United KingdomTHAMES21 are removing the outdated toe-boarding from the Dollis Brook along Brook Farm Open Space, and we need volunteer help from the community. There are...
Dollis Brook Toe-boarding Removal event series
Brook Farm Open Space Brook Farm Open Space, Car Park near Pavillion Off High Road, Barnet, United KingdomTHAMES21 are removing the outdated toe-boarding from the Dollis Brook along Brook Farm Open Space, and we need volunteer help from the community. There are...
River Litter Detectives – Riverside Studios
Riverside Studios 101 Queen Caroline StreetBook your place here Come along and join Thames21 as a river citizen scientist on the River Thames. We will be collecting the litter we...
Dollis Brook Toe-boarding Removal event series
Brook Farm Open Space Brook Farm Open Space, Car Park near Pavillion Off High Road, Barnet, United KingdomTHAMES21 are removing the outdated toe-boarding from the Dollis Brook along Brook Farm Open Space, and we need volunteer help from the community. There are...
Dollis Brook Toe-boarding Removal event series
Brook Farm Open Space Brook Farm Open Space, Car Park near Pavillion Off High Road, Barnet, United KingdomTHAMES21 are removing the outdated toe-boarding from the Dollis Brook along Brook Farm Open Space, and we need volunteer help from the community. There are...
Dollis Brook Toe-boarding Removal event series
Brook Farm Open Space Brook Farm Open Space, Car Park near Pavillion Off High Road, Barnet, United KingdomTHAMES21 are removing the outdated toe-boarding from the Dollis Brook along Brook Farm Open Space, and we need volunteer help from the community. There are...
Dollis Brook Toe-boarding Removal event series
Brook Farm Open Space Brook Farm Open Space, Car Park near Pavillion Off High Road, Barnet, United KingdomTHAMES21 are removing the outdated toe-boarding from the Dollis Brook along Brook Farm Open Space, and we need volunteer help from the community. There are...
Dollis Brook Toe-boarding Removal event series
Brook Farm Open Space Brook Farm Open Space, Car Park near Pavillion Off High Road, Barnet, United KingdomTHAMES21 are removing the outdated toe-boarding from the Dollis Brook along Brook Farm Open Space, and we need volunteer help from the community. There are...
Dollis Brook Toe-boarding Removal event series
Brook Farm Open Space Brook Farm Open Space, Car Park near Pavillion Off High Road, Barnet, United KingdomTHAMES21 are removing the outdated toe-boarding from the Dollis Brook along Brook Farm Open Space, and we need volunteer help from the community. There are...
Cray River – Balsam Blitz
51.432920, 0.137835 Water Lane, London, Select a State or Province:, United KingdomIts that time again... Spring has fully sprung and we have work to do. Thames21 have for 2 years been laying the ground work to...
Dollis Brook – Balsam Blitz
51.643019, -0.195686This particular event we will be focusing on invasive species removal exclusively. This will involve a fairly long walk, just over 1k in waders along the Dollis Brook so a reasonable level of fitness is required for this event, and isn’t suitable for under 16’s.
Cray River – Balsam Blitz EVENT CANCELLED DUE TO HIGH WATER LEVEL DUE TO RAINS
EVENT CANCELLED DUE TO HIGH WATER LEVEL DUE TO RAINS Its that time again... Spring has fully sprung and we have work to do. Thames21...
Dollis Brook – Balsam Blitz
51.630724, -0.178791As part of the Thames21 "Dollis Brook Toe-boarding removal Project" we were also successful in securing some funding from Affinity Water to tackle the invasive...
Cray River – Balsam Blitz
51.441173, 0.149808Himalayan 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.
Gores Brook Introduction & Balsam Removal Event
51°32'23.0"N 0°08'29.5"E Hedgeman's Road, Gores Brook ParkTHAMES21 and Barking & Dagenham Ranger Service are embarking on a project to improve the Gores Brook through Gores Brook Park and we need your...
Cray River – Balsam Blitz
51.441173, 0.149808Himalayan 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.
Gores Brook Balsam – Himalayan Balsam Removal Event
51°32'22.9"N 0°08'29.3"ETHAMES21 and Barking & Dagenham Ranger Service are embarking on a project to improve the Gores Brook through Gores Brook Park and we need your...
Gores Brook – Himalayan Balsam Removal Event #3
51°32'15.8"N 0°08'36.4"ETHAMES21 and Barking & Dagenham Ranger Service are embarking on a project to improve the Gores Brook through Gores Brook Park and we need your...
Gores Brook – Himalayan Balsam Removal Event #4
51°32'15.8"N 0°08'36.4"ETHAMES21 and Barking & Dagenham Ranger Service are embarking on a project to improve the Gores Brook through Gores Brook Park and we need your...
Dollis Brook – Balsam Blitz
brook pa Brook Farm Open Space Pavilion car parkAs part of the Thames21 “Dollis Brook Toe-boarding removal Project” we were also successful in securing some funding from Affinity Water to tackle the invasive plant Himalayan Balsam. While we are...
Cray River – Balsam Blitz
51.432897, 0.137894Himalayan 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.
Cray River – Balsam Blitz
51.44093 N, 0.15166 E 95 Thomas Shearley Court, BexleyHimalayan 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.