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Wednesday, 1 April 2026

Beavers Released in Hammersmith Park

Hammersmith Park Beaver Dam
Beavers have been released in Hammersmith Park, and already they are making an impact on the local ecosystem.

Residents visiting Hammersmith Park this morning may notice discreet new fencing around part of the lake. 

It forms part of a carefully managed pilot to reintroduce Eurasian beavers as a natural flood-mitigation and biodiversity project.


Eurasian Beaver
Riparian Restoration
The initiative, developed in partnership with urban ecologists and approved after a year-long feasibility study, will see a small pair of beavers housed within a monitored enclosure on the park’s western watercourse. 

The aim is to demonstrate how “ecosystem engineers” can improve water quality, create wetland habitat, and slow peak water flow during heavy rainfall — an increasingly relevant concern in west London.

Council Participation
A council spokesperson emphasised that the animals will not be roaming freely. “This is a contained, evidence-led trial,” she said. “The enclosure has been designed to protect mature trees, nearby footpaths and existing park infrastructure. We are working with licensed specialists and veterinary oversight.”

Natural Habitat
Hammersmith Park - before beaver introduction
Beavers were once native to Britain but were hunted to extinction around 400 years ago. In recent years, carefully managed reintroductions in other parts of the country have been credited with improving wetland biodiversity and reducing downstream flooding.

Benefits to Hammersmith Park

Project documents outline several anticipated benefits:
  • Creation of wetland habitat for amphibians and invertebrates
    Beaver Dam
  • Natural filtration of water through dam-building activity
  • Increased resilience to heavy rainfall events
  • Educational opportunities for local schools
Interpretation boards are being installed to explain how beaver dams work and why fallen trees — where safe — may now be left in situ as part of the habitat strategy.

Residents' Objections
Some residents have raised practical questions about tree loss and path access.  The council has confirmed that protective mesh has been placed around heritage trees and that daily monitoring will take place during the first six months.

An ecologist involved in the project described the move as “a modest but meaningful step toward urban rewilding.”  “Cities can support far more biodiversity than we often assume,” he said. “Beavers reshape landscapes in ways that benefit dozens of other species. The key is careful planning.”

12 Month Trial Period
The trial will run for twelve months, after which its environmental impact will be independently assessed. Public information sessions are scheduled at the park café later this week.

Officials stress there is no danger to dogs, joggers or paddleboarders, and that the animals are primarily nocturnal.

Residents are advised that if they notice new dams forming, fluctuating water levels, or an unusual increase in dragonflies, this is “a sign the project is working.”

The Shepherd's Bush Blog offers a personal view on life in Shepherd's Bush. If you would like to contribute a story about our neighbourhood, email us at shepherdsbushblog(at)gmail.com


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