Events for 26th February 2026

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Dollis Brook Sep25

Dollis Brook Revival – River Restoration Project

Dollis Brook, Whetstone Stray Barnet

Join us to bring the Dollis Brook back to life! A total of 8 fun and interactive volunteer events will be held throughout the winter...

Free
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Action for Silk Stream – River Action Day

Watling Park Watling Park, Edgware

Join us for our Action for Silk Stream monthly volunteering days. They will be held on the last Thursday of each month. Please book here:...

Volunteers standing on the foreshore.

River Litter Detectives – Queenhithe

Queenhithe, City of London by the Queenhithe Mosaic, City of London

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...

All our events and activities are open to communities.

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