All our events and activities are open to communities.
Corporate groups, please book with Thames21 using our corporate volunteering page
Calendar of Events
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1 event,
Gores Brook Introduction & Balsam Removal Event
Gores Brook Introduction & Balsam Removal Event
THAMES21 and Barking & Dagenham Ranger Service are embarking on a project to improve the Gores Brook through Gores Brook Park and we need your...
0 events,
1 event,
Action for Silk Stream – Free Half term activities at the Welsh Harp
Action for Silk Stream – Free Half term activities at the Welsh Harp
Let’s Go Wild at Welsh Harp! Come join us and explore the Welsh Harp Reservoir this May Half Term for FREE activities at the Welsh...
2 events,
Action for Silk Stream – Free Half term activities at the Welsh Harp
Action for Silk Stream – Free Half term activities at the Welsh Harp
Let’s Go Wild at Welsh Harp! Come join us and explore the Welsh Harp Reservoir this May Half Term for FREE activities at the Welsh...
Action for Silk Stream – River Action Day at Watling Park
Action for Silk Stream – River Action Day at Watling Park
Join us for our Action for Silk Stream monthly volunteering days. They will be held on the last Thursday of each month. To book please...
2 events,
Action for Silk Stream – Free Half term activities at the Welsh Harp
Action for Silk Stream – Free Half term activities at the Welsh Harp
Let’s Go Wild at Welsh Harp! Come join us and explore the Welsh Harp Reservoir this May Half Term for FREE activities at the Welsh...
River Litter Detectives – Broomhouse Dock
River Litter Detectives – Broomhouse Dock
Book your place here Come along and join Thames21 as a river citizen scientist on the River Thames. We will be collecting the litter we...
1 event,
Cray River – Balsam Blitz
Cray River – Balsam Blitz
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.
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1 event,
River Litter Detectives – Bishop’s Park
River Litter Detectives – Bishop’s Park
BOOK YOUR PLACE NOW Come along and join Thames21 as a river citizen scientist on the River Thames. We will be collecting the litter we...
1 event,
Gores Brook Balsam – Himalayan Balsam Removal Event
Gores Brook Balsam – Himalayan Balsam Removal Event
THAMES21 and Barking & Dagenham Ranger Service are embarking on a project to improve the Gores Brook through Gores Brook Park and we need your...
1 event,
Leading Action for Healthy Rivers Training – West London
Leading Action for Healthy Rivers Training – West London
Training: Leading Action for Healthy Rivers June: Sunday 9th & Monday 10th We are looking to train future River Action Leaders! Take part in Thames21's...
0 events,
0 events,
1 event,
River Litter Detectives – Limekiln Dock
River Litter Detectives – Limekiln Dock
Book your place here! Come along and join Thames21 as a river citizen scientist on the River Thames. We will be collecting the litter we...
0 events,
1 event,
River Litter Detectives – Queenhithe
River Litter Detectives – Queenhithe
Book your place HERE! Come along and join Thames21 as a river citizen scientist on the River Thames. We will be collecting the litter we...
1 event,
Gores Brook – Himalayan Balsam Removal Event #3
Gores Brook – Himalayan Balsam Removal Event #3
THAMES21 and Barking & Dagenham Ranger Service are embarking on a project to improve the Gores Brook through Gores Brook Park and we need your...
1 event,
Sands End Plastic Workshop
Sands End Plastic Workshop
Join Brigitta Nagypal and Thames21 for a creative, family-friendly art workshop at Sands End Arts & Community in Fulham on June 16th (Sunday) for a...
0 events,
1 event,
Gores Brook – Himalayan Balsam Removal Event #4
Gores Brook – Himalayan Balsam Removal Event #4
THAMES21 and Barking & Dagenham Ranger Service are embarking on a project to improve the Gores Brook through Gores Brook Park and we need your...
0 events,
1 event,
Dollis Brook – Balsam Blitz
Dollis Brook – Balsam Blitz
As 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...
1 event,
Cray River – Balsam Blitz
Cray River – Balsam Blitz
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.
8 events,
London Rivers Week 2024: Beverley Brook Lost Nature Trail
Join Friends of Barnes Common for this brilliant walk along the Beverley Brook in south-west London. The purpose of the walk is to engage the...
London Rivers Week 2024: Walk along the Mutton Brook – Pollution Issues and Hanna Checker Demo
London Rivers Week 2024: Walk along the Mutton Brook – Pollution Issues and Hanna Checker Demo
Join us for a morning walk along the Mutton Brook where we'll discuss some of the pollution issues negatively impacting the brook and ways citizen...
London Rivers Week 2024: 3 Rivers Clean Up with QWAG
London Rivers Week 2024: 3 Rivers Clean Up with QWAG
Get on your waders and help clean Lewisham's rivers of litter and Himalayan balsam. BOOKING ESSENTIAL - please register by clicking the email below and...
London Rivers Week 2024: Guided walk around Chinbrook Meadows and crafts
London Rivers Week 2024: Guided walk around Chinbrook Meadows and crafts
In celebration of London Rivers Week 2024 ('London is a river city'), join our friendly guides for a walk around the newly excavated wetland where...
London Rivers Week 2024: Wilbury Way Clean Up and Balsam Bash
London Rivers Week 2024: Wilbury Way Clean Up and Balsam Bash
The Pymmes Brookers will play their part by carrying out a clean up and balsam bash at Wilbury Way. The wetland beside the brook has...
FULLY BOOKED: London Rivers Week 2024: Mudlarking on the Thames – A Talk by Nicola White
FULLY BOOKED: London Rivers Week 2024: Mudlarking on the Thames – A Talk by Nicola White
*FULLY BOOKED: If you wish to be placed on a reserve list, please contact Matt Dawson at matt.dawson@thames21.org.uk. If you are not registered, you will...
8 events,
FULLY BOOKED – London Rivers Week 2024: Deptford Creek Fish Survey – two sessions
Want to learn more about the aquatic life that calls Deptford Creek home? Then come to the Creekside Discovery Centre to help with its fish...
London Rivers Week 2024: Morden Hall Park Family Craft Experience Day
London Rivers Week 2024: Morden Hall Park Family Craft Experience Day
Thames21 is collaborating with the National Trust to organise a day of craft activities for children which will involve sitting by the River Wandle and...
London Rivers Week 2024: Elmbridge Meadows Community Day
London Rivers Week 2024: Elmbridge Meadows Community Day
Join the South East Rivers Trust on Sunday 23rd June for a day of river-themed family fun! Come and learn more about the Elmbridge Meadows...
London Rivers Week 2024: 3 Rivers Clean Up at Glassmill Pond
London Rivers Week 2024: 3 Rivers Clean Up at Glassmill Pond
Date and time: Sunday 23rd June, 10am - noon. Meet at the concrete ramp at Glassmill Pond, Glassmill Lane, Bromley BR2 0EW. Pond dipping, water quality...
London Rivers Week 2024: Chiswick Eyot Conservation Days
London Rivers Week 2024: Chiswick Eyot Conservation Days
Sign up here > https://book.plinth.org.uk/e/SOFDtIgw70Gohc6XHNvd Thames21 are working to restore Chiswick Eyot. Information about the day: Volunteer and help us to stabilise the island from...
London Rivers Week 2024: Fungi & Rivers – The Missing Link – Sunday 23rd June event
London Rivers Week 2024: Fungi & Rivers – The Missing Link – Sunday 23rd June event
Fungi are usually associated with terrestrial habitats, like forests and grassland, but their role in sustaining healthy aquatic ecosystems – including rivers – is often...
7 events,
FULLY BOOKED – London Rivers Week 2024: How to fix our broken water system?
FULLY BOOKED – London Rivers Week 2024: How to fix our broken water system?
Only 14% of rivers in England have a good ecological status and none have a good chemical status. Water quality and the health of our...
London Rivers Week 2024: 6km Thames Loop Nature Walk
London Rivers Week 2024: 6km Thames Loop Nature Walk
Join Brenna Boyle of Wild Capital (who developed this attractive 6k two bridges walk besides The Thames) as she leads a free walk with commentary...
FULLY BOOKED – London Rivers Week 2024: Make London a ‘sponge city’ panel event
FULLY BOOKED – London Rivers Week 2024: Make London a ‘sponge city’ panel event
Time and date: Monday 24th Jun 2024 6pm - 7:30pm Location: At The Gallery - 70 Cowcross Street, London, EC1M 6EJ Register here: https://cpre-london.eventcube.io/events/60231/make-london-a-sponge-city/ Join us...
London Rivers Week 2024: Longford River Plasticblitz
London Rivers Week 2024: Longford River Plasticblitz
The Longford is an urban river with a plastic pollution problem. Please join Thames Landscape Strategy to help litter pick this fantastic river to make...
London Rivers Week 2024: Watervole recovery and a mink-free Britain
London Rivers Week 2024: Watervole recovery and a mink-free Britain
Join Water Life Recovery Trust for an online webinar to learn about their trailblazing partnership project to eradicate invasive American Mink from Britain. Learn about...
9 events,
London Rivers Week 2024: River Litter Detectives – Poplar Rowing Club
London Rivers Week 2024: River Litter Detectives – Poplar Rowing Club
Please book your place here! Come along and join Thames21 as a river citizen scientist on the River Thames. We will be collecting the litter...
London Rivers Week 2024: Restoring the River Roding
London Rivers Week 2024: Restoring the River Roding
Please sign up using this link! Welcome to London Rivers Week! This special occasion is dedicated to honoring London's rivers and recognizing London as a...
London Rivers Week 2024: Six Acre Balsam Bash
London Rivers Week 2024: Six Acre Balsam Bash
Join our friends South East Rivers Trust at Six Acre Meadow to help remove the invasive plant, Himalayan balsam. There will be options to work...
CANCELLED – London Rivers Week 2024: Walk from Tottenham to Enfield Lock
CANCELLED – London Rivers Week 2024: Walk from Tottenham to Enfield Lock
Join the Lee Valley Regional Park Authority for a London Rivers Week walk from Tottenham to Enfield Lock. This week's walk in the park leads...
CANCELLED – London Rivers Week 2024: Slade Pond Water Sampling Day
CANCELLED – London Rivers Week 2024: Slade Pond Water Sampling Day
Join us in London Rivers Week - meeting at the end of Roydene Road, SE18 19Z --- https://what3words.com/train.energy.case PLEASE REGISTER HERE: https://book.plinth.org.uk/e/sLRN9vf6nx6rRe2BI7DE Water samplers and...
9 events,
London Rivers Week 2024: Balsam Bash
London Rivers Week 2024: Balsam Bash
Come and work with the Friends of Barnes Common on freeing the banks of the Beverley Brook from the invasive Himalayan Balsam (Impatiens glandulifera) that is spreading...
London Rivers Week 2024: Wade through the River Ravensbourne and Clean-Up
London Rivers Week 2024: Wade through the River Ravensbourne and Clean-Up
Join the Friends of the River Pool for a wade through the River Ravensbourne and a clean-up, as part of London Rivers Week 2024. Date...
London Rivers Week 2024: Guided walk Beverley Brook
London Rivers Week 2024: Guided walk Beverley Brook
Join South East Rivers Trust for a guided walk from Richmond Park to Wimbledon Common (and back again!) to learn about the history, ecology and...
London Rivers Week 2024: Short film screening of Jack Thurgar’s ‘The Swamp’ and talk by Tom Bolton on Obscure Rivers
London Rivers Week 2024: Short film screening of Jack Thurgar’s ‘The Swamp’ and talk by Tom Bolton on Obscure Rivers
Join us as part of London Rivers Week 2024 for a short film screening of Jack Thurgar’s ‘The Swamp’ and talk by Tom Bolton on...
London Rivers Week 2024: Southmere Lake Water Sampling Day
London Rivers Week 2024: Southmere Lake Water Sampling Day
Join us in London Rivers Week - meeting in cygnet square by the Nest Community Library --- https://what3words.com/drum.supporter.drop PLEASE REGISTER HERE: https://book.plinth.org.uk/e/BiVSu6a3wOlx9dBb5Zsg Water samplers and...
9 events,
FULLY BOOKED: Evening Hogsmill River Walk – Old Malden to Kingston
FULLY BOOKED: Evening Hogsmill River Walk – Old Malden to Kingston
Evening Hogsmill River Walk - Old Malden to Kingtson Join conservationist Elliot Netwon for a guided walk along the Hogsmill River into Kingston.
London Rivers Week 2024: Vital Signs for Healthy Rivers Training
London Rivers Week 2024: Vital Signs for Healthy Rivers Training
What makes a river healthy? Do you know what signs to look for? Come and learn about how you can spot the vital signs of...
London Rivers Week 2024: Restoring the River Ravensbourne at Glassmill Pond
London Rivers Week 2024: Restoring the River Ravensbourne at Glassmill Pond
Celebrate London Rivers Week 2024 with us at Glassmill Pond in Bromley! Join our volunteer event as we continue our restoration work on the River...
London Rivers Week 2024: Give Your River a Physical Health Check with MoRPh Citizen Science!
London Rivers Week 2024: Give Your River a Physical Health Check with MoRPh Citizen Science!
Learn all about how to assess river form, features and the dynamic processes that support habitats for aquatic wildlife using MoRPh CSci and how to...
London Rivers Week 2024: Poulter Park clean-up
London Rivers Week 2024: Poulter Park clean-up
Join our friends South East Rivers Trust during London Rivers Week at Poulter Park to don waders and enter the Wandle to remove litter and...
2 events,
London Rivers Week 2024: 3 Rivers Clean Up at Crofton and Sparrow Woods
London Rivers Week 2024: 3 Rivers Clean Up at Crofton and Sparrow Woods
Friday 28th June, 10am - 12.30pm. Meet in Petts Wood Recreation Ground Car Park at end of Eynsford Close, Petts Wood, Orpington, BR5 1DP. River...
London Rivers Week 2024: Restoration of the Lower Crane – A River Walk
London Rivers Week 2024: Restoration of the Lower Crane – A River Walk
Join FORCE for a walk visiting habitat improvements on the River Crane, a river that many know already as a place to walk, relax and...
5 events,
London Rivers Week 2024: Ravensbourne Photographic Pilgrimage – Source to Mouth
London Rivers Week 2024: Ravensbourne Photographic Pilgrimage – Source to Mouth
As part of London Rivers Week, Edwin Quast will be walking the entire length of the Ravensbourne River from its source at Keston Ponds near...
London Rivers Week 2024: Aquatic Invertebrate Survey – Walthamstow Wetlands
London Rivers Week 2024: Aquatic Invertebrate Survey – Walthamstow Wetlands
In celebration of London Rivers Week 2024 ('London is a river city'), join London Wildlife Trust team for a morning of aquatic invertebrate surveys of...
London Rivers Week 2024: Place-making and the Rivers of Lewisham – Podcasts and Report Launch
London Rivers Week 2024: Place-making and the Rivers of Lewisham – Podcasts and Report Launch
Saturday 29th June, 1pm-7pm Various venues across Lewisham (please see event information and tickets for more details) Free but please book here. Join urban sociologists...
London Rivers Week 2024: Inclusive nature cycle – learn about the urgent need for more rain gardens
London Rivers Week 2024: Inclusive nature cycle – learn about the urgent need for more rain gardens
Join our friends this inclusive nature cycle where everyone is encouraged to come along and learn more about sustainable urban drainage sites and the urgent...
London Rivers Week 2024: Guided Walk – Walthamstow Wetlands
London Rivers Week 2024: Guided Walk – Walthamstow Wetlands
In celebration of London Rivers Week 2024 ('London is a river city'), join our friendly guides for a walk around the reserve where we'll explore...
5 events,
London Rivers Week 2024: Beckenham Place Park wade and riverbank conservation
London Rivers Week 2024: Beckenham Place Park wade and riverbank conservation
Join us for a wade upstream in Beckenham Place Park's Ravensbourne River. Learn about the exciting improvement works in this side of the park by...
London Rivers Week 2024: Guided walk – Wandle Discovery Day
London Rivers Week 2024: Guided walk – Wandle Discovery Day
The River Wandle is a fantastic river. Join Wandle Industrial Museum’s John Sheridan on a guided walk along the River Wandle, taking in Wandle Park,...
FULLY BOOKED – London Rivers Week 2024: A Short Introduction To The Thames Estuary – Guided Walk
FULLY BOOKED – London Rivers Week 2024: A Short Introduction To The Thames Estuary – Guided Walk
THIS EVENT HAS NOW SOLD OUT. PLEASE LOOK ANOTHER LONDON RIVERS WEEK EVENT TO BOOK. As part of London Rivers Week, come and join Thames...
London Rivers Week 2024: Ringing in Plastic-Free July
London Rivers Week 2024: Ringing in Plastic-Free July
Join OXO Tower Restaurant's beach clean up group for a litter pick on the Thames foreshore, as part of a London Rivers Week 2024 special. Date:...
London Rivers Week 2024: Honouring Mama Osun
London Rivers Week 2024: Honouring Mama Osun
We enjoyed it so much last year that the Annual Osun River Ritual organisers and Thames21 are again inviting you to this special tribute to...