Thames21 Limited

Thank you for your interest in becoming an Urban Riverfly Monitor! For more information about the Urban Riverly scheme, which was developed by the Riverfly Partnership, please click <a href="https://www.riverflies.org/urban-riverfly" rel="noopener noreferrer" target="_blank" style="color: rgb(70, 120, 134);">here</a>.&nbsp;&nbsp; Date: Wednesday 1st July 2026&nbsp; Venue: Salisbury House<ul><li>Address: Bury Street West,London, N9 9LA</li><li>What3words: ///slug.deny.below</li><li>Google Maps link: <a href="https://www.google.com/maps/place/Salisbury+House,+Bury+St+W,+London+N9+9LA/@51.6336683,-0.0771551,17z/data=!3m1!4b1!4m6!3m5!1s0x48761edc591300d3:0x9cae9d7ec5cdcdf!8m2!3d51.6336683!4d-0.0745802!16s%2Fg%2F1thg9yq7?entry=ttu&amp;g_ep=EgoyMDI2MDYwMS4wIKXMDSoASAFQAw%3D%3D" rel="noopener noreferrer" target="_blank">Salisbury House</a></li></ul> Timings: 09:45 - 16:30 (more detail below). Please note, timings are slightly flexible so we may finish slightly earlier than 16:30 (any time between 16:00 and 16:30).&nbsp; Structure of the day:&nbsp; 09:45 - Arrivals, registration and refreshments&nbsp;10:00 = Intros, health &amp; safety and biosecurity&nbsp;10:30 = Introduction to Riverfly monitoring (RMI)&nbsp;10:50 = BREAK (tea/coffee)&nbsp;11:00 = Target groups - identification, life history &amp; ecology&nbsp;11:40 = BREAK (tea/coffee)&nbsp;11:50 = RMI fieldwork - theory&nbsp;12:15 = BREAK (lunch)&nbsp;12:45 = RMI fieldwork - practical session in the river&nbsp;15:00 = Clean equipment and kit&nbsp;15:45 = ID quiz (back inside the centre)&nbsp;15:50 = Online database and RMI in practice&nbsp;16:15 = Questions and feedback&nbsp;16:30 = Finish&nbsp; Parking: If you are driving, there is free on-street parking on Bury Street and some surrounding streets&nbsp; Practical session site: Bury Lodge Wetlands <ul><li>This is a very short walk from Salisbury House</li><li>Google Maps location: <a href="https://www.google.com/maps/place/Bury+Lodge+Wetlands/@51.6322258,-0.0749161,17z/data=!4m16!1m9!3m8!1s0x48761edc591300d3:0x9cae9d7ec5cdcdf!2sSalisbury+House,+Bury+St+W,+London+N9+9LA!3b1!8m2!3d51.6336683!4d-0.0745802!10e5!16s%2Fg%2F1thg9yq7!3m5!1s0x48761edcdcedcbc3:0xedfdc6c0eb6b0d9!8m2!3d51.6320483!4d-0.0751771!16s%2Fg%2F11ggw0nykt?entry=ttu&amp;g_ep=EgoyMDI2MDYwMS4wIKXMDSoASAFQAw%3D%3D" rel="noopener noreferrer" target="_blank" style="color: rgb(70, 120, 134);">https://maps.app.goo.gl/1ytCbjobGiHRqavLA</a>&nbsp;</li></ul> &nbsp; Lunch: Please bring your own lunch with you. There will be time during the break to buy some from nearby shops and cafes if needed, although these are limited. Clothing: Please dress appropriately for the weather - if there is rain in the forecast, bring a raincoat. Please wear long trousers and wear or bring a long-sleeved top/fleece/jumper to protect yourself from nettles or giant hogweed. Note that we will change into waders before approaching the river for the practical session.&nbsp; Waders: Please let me know what your shoe size is ASAP so I can make sure I bring enough waders to fit everyone. I won't be able to let you keep these waders unfortunately - they will just be loaned to you for the training day. Also, please let me know if you are going to bring your own waders. &nbsp; Equipment: Equipment for the RMI practical fieldwork will be provided on the day by Thames21 - we are able to give some kit on the day to people/groups who want to start monitoring regularly. This kit includes: a large net (approximately 1.5m tall so I would advise not cycling if you are the designated person in your group who is taking the net home), a 16 litre bucket, a large white tray, a nine-section divided tray, a large pipette, a couple of small pipettes, a couple of plastic spoons, a magnifying glass and a paintbrush.&nbsp; Let me know if you have any questions by emailing me at toby.dighero@thames21.org.uk or phoning me on 07968 805751

Salisbury House

Thank you for booking your place on Friday, July 3rd, 2026. We will be in touch the week of the event with further information.

Join us again to help eradicate Himalayan Balsam from the River Cray for now and the future! Thames21 have been laying the ground work to eradicate the invasive species Himalayan Balsam from the River Cray. Himalayan Balsam, an invasive plant that damages our fragile river systems, erodes the riverbanks, outcompeting native plants and grows readily in wet conditions. Sadly, it has spread quite pervasively down many UK rivers like the Cray in Bexley. This is the second part of our Cray River wades. We will meet at the Mill Pond in Old Bexley, DA5 1JX where we will spend a short time managing the overgrown vegetation in the pond which is slowing the flow of the river. After a refreshment break we will cross over the road and enter the River Cray where we will wade and pull up the Himalayan Balsam from its root ball and remove it. We will continue the wade for a while and then turn around and wade back to Mill Pond. Thames21 will supply all the equipment you need on the day. Please specifiy your wader size at registration. You will need to have a good general level of fitness to wade along the river. This event is open to everyone except small children due to the nature of the risks associated with wading down a river. Children over 10 should be always accompanied by a parent or guardian. Meeting point:Mill Pond, Old Bexley https://maps.app.goo.gl/f6oxGGPGaQfQxDtn6 What to bring on the day: Appropriate long sleeve clothing as we will be working around nettles and spikey plants, please bring water. It is advisable to have a hat and wear sunscreen. All other equipment will be provided. Facilities on the day: Toilets are available in the train station or local cafes or pub. Refreshments will be provided on the day to all volunteers. If you have any questions about this event or wish to know more, please email the event leader Sam at <a href="mailto:Michael.oneill@Thames21.org.uk" rel="noopener noreferrer" target="_blank">samantha.dhedhi@Thames21.org.uk</a> This is an event designed for the community, to engage the local public with the river and not for corporates. If you are interested in a bespoke corporate volunteer day. Please visit our website <a href="https://www.thames21.org.uk/get-involved-2/corporatevolunteering/" rel="noopener noreferrer" target="_blank" style="background-color: rgb(255, 255, 255);">https://www.thames21.org.uk/get-involved-2/corporatevolunteer</a>

River Cray - Balsam Blitz & Habitat Maintenance

Mill Pond, Bexley

Bring the Dollis Brook back to life! Join us this summer in removing invasive non-native species (INNS) and litter from the Dollis Brook, supporting the recovery of native plants and boosting biodiversity along the riverbank. Where to meet:<ul><li>Outside 21 Longland Drive, N20 8HH https://maps.app.goo.gl/CZkUYcHK8W3oSubv6 (about 100m down from Totteridge Lane - look for light blue Thames 21 van)</li><li>What 3 Words: hung.laptop.agree</li><li>Nearest tube: Totteridge and Whetstone </li></ul> We’ll meet here, as it’s easier and free to park. Once everyone has arrived, we’ll walk upstream to the site. What to Bring:Dress for the weather and the task – long trousers and sleeves are advisable as there are nettles and brambles.Please bring a packed lunch and plenty of fluids.Sun cream and a hat.We will bring tea/coffee and biscuits.We will provide all other equipment (including waders/wellies) needed for the event and we look forward to welcoming you! Email charlie.southard@thames21.org.uk if you have any questions.Anyone under the age of 18 must be accompanied by a parent or guardian. Please make sure you have weather appropriate clothing for the day.Please get in touch if you have any questions about accessibility. We will do our best to make this event as accessible as possible. Please note:&nbsp;A reasonable level of physical fitness is required due to the nature of the event. While nothing too strenuous, the event will include physical activity outdoors, plus walking. &nbsp;This is an event designed for the community to engage the local public with the river and not for corporates. If you are interested in a bespoke corporate volunteer day. Please visit our website&nbsp;&nbsp;<a href="https://www.thames21.org.uk/get-involved-2/corporateteamdays/" rel="noopener noreferrer" target="_blank">https://www.thames21.org.uk/get-involved-2/corporateteamdays/</a>

meet half way down Longland Drive opposite the park entrance inbetween the houses

Dollis Brook - Longland Drive 

Bring the Gores Brook back to life! Join us this summer in removing invasive non-native species (INNS) and litter from the Gores Brook, supporting the recovery of native plants and boosting biodiversity along the riverbank. Where to meet:<ul><li>GoresBrook Park, north side (Hedgeman's Road entrance) - Google maps: https://maps.app.goo.gl/Px7npX89dsxnJTAC7</li><li>What 3 Words: wanted.track.awake</li><li>Nearest tube: Dagenham Heathway</li></ul> What to Bring:Dress for the weather and the task – long trousers and sleeves are advisable as there are nettles and brambles.Please bring a packed lunch and plenty of fluids.Sun cream and a hat if weather is hotWe will bring tea/coffee and biscuits.We will provide all other equipment (including waders/wellies) needed for the event and we look forward to welcoming you! Email charlie.southard@thames21.org.uk if you have any questions.Anyone under the age of 18 must be accompanied by a parent or guardian. Please make sure you have weather appropriate clothing for the day.Please get in touch if you have any questions about accessibility. We will do our best to make this event as accessible as possible. Please note: A reasonable level of physical fitness is required due to the nature of the event. While nothing too strenuous, the event will include physical activity outdoors, plus walking.&nbsp;This is an event designed for the community to engage the local public with the river and not for corporates. If you are interested in a bespoke corporate volunteer day. Please visit our website&nbsp;&nbsp;<a href="https://www.thames21.org.uk/get-involved-2/corporateteamdays/" rel="noopener noreferrer" target="_blank">https://www.thames21.org.uk/get-involved-2/corporateteamdays/</a>

Gores Brook Park 

Thank you for booking, We will be in touch with more information soon.

Join us in the orchard at Watling Park this summer holiday where we will be doing a creative workshop to label the newly planted trees in the orchard. Where to meet usWatling Park, Burnt Oak, BarnetColchester Road entranceW3W ///drop.aware.strike What to expect:There are 25 fruit trees - we need to identify them and then create labels so that everyone knows what they are!We might even get to do some pond dipping too if we have time! Who is it forThis is a relaxed, outdoor session designed for families with children aged 5–14 No prior experience neededChildren must be supervised by a responsible adult at all times.<h2> </h2>What to bringSuitable outdoor clothing - bring sunscreen / hats, or waterproofs, according to the weather Drinking water - don't forget to bring a full water bottle! We will provide all equipment. There are public toilets at Burnt Oak library.

Action for Silk Stream - Tree labelling activity

Watling Park

Thank you for volunteering! I will be sending out more details nearer the time.

Join us for free our Action for Silk Stream monthly volunteering days. We will be at Silk Stream Park in Barnet where we will be giving this space a spring clean!&nbsp;Activities include balsam bashing and litter picking!Balsam is an invasive plant that we don't want to see growing along our riverbanks. The best and easiest way to remove it is by pulling it out by hand. It's easy to spot and easy to pull out. We guarantee that by the end of the day, you will be an expert in this activity!! No previous experience necessary!&nbsp;Where to meet:Silkstream Park, Edgware HA8 0DF What3words: ///skirt.achieving.pushed Nearest tube: Burnt Oak (northern line) Nearest toilets are at Burnt Oak library by the tube station or in Montrose Park (Brews and Views cafe)&nbsp; What to Bring:Dress for the weather and the task – long trousers and sleeves are advisable as there are nettles and brambles.Please bring a packed lunch and plenty of fluids.We will bring tea/coffee and biscuits.We will provide all other equipment (including wellies) needed for the event and we look forward to welcoming you! Email&nbsp;helen.cardy@thames21.org.uk&nbsp;if you have any questions.Anyone under the age of 18 must be accompanied by a parent or guardian. Please make sure you have weather appropriate clothing for the day.Please get in touch if you have any questions about accessibility. We will do our best to make this event as accessible as possible.&nbsp;This is an event designed for the community to engage the local public with the river and not for corporates. If you are interested in a bespoke corporate volunteer day. Please visit our website&nbsp;&nbsp;<a href="https://www.thames21.org.uk/get-involved-2/corporateteamdays/" rel="noopener noreferrer" target="_blank">https://www.thames21.org.uk/get-involved-2/corporateteamdays/</a>

Silkstream park

Thank you for booking! We will send you more details nearer the time.

Join us for free our Action for Silk Stream monthly volunteering days. We will be at Rushgrove Park in Barnet where we will be giving this space a spring clean!&nbsp;Activities include balsam bashing and litter picking!Balsam is an invasive plant that we don't want to see growing along our riverbanks. The best and easiest way to remove it is by pulling it out by hand. It's easy to spot and easy to pull out. We guarantee that by the end of the day, you will be an expert in this activity!! No previous experience necessary!&nbsp;Where to meet:Rushgrove Park, Barnet, NW9 6RD What3words: //////snows.divisions.steer Nearest tube: Colindale (northern line) Note - There are no toilets on site.Nearest toilets will be near the tube station at Costa Coffee. What to Bring:Dress for the weather and the task – long trousers and sleeves are advisable as there are nettles and brambles.Please bring a packed lunch and plenty of fluids.We will bring tea/coffee and biscuits.We will provide all other equipment (including wellies) needed for the event and we look forward to welcoming you! Email&nbsp;helen.cardy@thames21.org.uk&nbsp;if you have any questions.Anyone under the age of 18 must be accompanied by a parent or guardian. Please make sure you have weather appropriate clothing for the day.Please get in touch if you have any questions about accessibility. We will do our best to make this event as accessible as possible.&nbsp;This is an event designed for the community to engage the local public with the river and not for corporates. If you are interested in a bespoke corporate volunteer day. Please visit our website&nbsp;&nbsp;<a href="https://www.thames21.org.uk/get-involved-2/corporateteamdays/" rel="noopener noreferrer" target="_blank">https://www.thames21.org.uk/get-involved-2/corporateteamdays/</a>

Rushgrove Park

Thanks for booking. More information will be sent to you the week before.

Join us for our Action for Silk Stream monthly volunteering days. They will be held on the last Thursday of each month.&nbsp;We will be at Watling Park in Barnet where we will be giving this space an autumn clean!&nbsp;Activities include cutting back brambles and overgrown vegetation along the river banks and litter picking.&nbsp;Where to meet:Watling Park, Barnet, HA8 0RWMeet up near the entrance by Abbots Road What3words: ///shovels.locked.cheek Nearest tube: Burnt Oak (northern line)&nbsp;What to Bring:Dress for the weather and the task – long trousers and sleeves are advisable as there are nettles and brambles.Please bring a packed lunch and plenty of fluids.We will bring tea/coffee and biscuits.We will provide all other equipment (including wellies) needed for the event and we look forward to welcoming you!&nbsp;Email helen.cardy@thames21.org.uk if you have any questions.Anyone under the age of 18 must be accompanied by a parent or guardian. Please make sure you have weather appropriate clothing for the day.Please get in touch if you have any questions about accessibility. We will do our best to make this event as accessible as possible.&nbsp;This is an event designed for the community to engage the local public with the river and not for corporates. If you are interested in a bespoke corporate volunteer day. Please visit our website&nbsp;&nbsp;<a href="https://www.thames21.org.uk/get-involved-2/corporateteamdays/" rel="noopener noreferrer" target="_blank">https://www.thames21.org.uk/get-involved-2/corporateteamdays/</a>

Action for Silk Stream  - River Action Day

Thames21 Limited

Riverfly Training

River Cray - Balsam Blitz & Habitat Maintenance

Dollis Brook Balsam Bash

Gores Brook Revival

Action for Silk Stream - Tree labelling activity

Action for Silk Stream River Action Day

Action for Silk Stream Volunteer Day

Action for Silk Stream - River Action Day