Beavers Return to London After Centuries, Easing Floods and Restoring Habitat

In October 2023, the Ealing Beaver Project released a family of five beavers into an eight-hectare enclosure at Paradise Fields in Greenford, marking the first time in centuries that beavers have shaped London's waterways. The initiative began after two local residents met at a beaver conservation talk at Kew Gardens in February 2020, forming the London Beaver Working Group. Partners spent two years scouting sites and consulting the public before Natural England granted a five-year license in January 2023. Ealing Council funded the enclosure fencing, and the Mayor of London's Rewild London Fund supported staff and site management.

The beavers were relocated from a site in Scotland where they were in conflict with landowners, offering an alternative to permanent removal. A veterinarian from the Beaver Trust assessed their health before transport. Since their release, the animals have built several dams and dug new channels along the brook running through Paradise Fields, which has a history of overflowing and flooding areas near Greenford Tube station. Research from similar trials in Devon found beaver activity can cut peak flood flows by up to 60%, suggesting a low-cost natural complement to the city's drainage infrastructure.

Biodiversity gains are another core goal. Organizers report habitat improvements that could eventually support the reintroduction of water voles, currently considered locally extinct in the area. The beavers have also bred successfully, with kits born on site, indicating the enclosure provides suitable conditions for a self-sustaining population. The project's lead, Dr. Sean McCormack, notes this natural population growth is a strong signal of success for any reintroduction effort.

Public engagement is central to the project design. Paradise Fields offers self-guided tours so visitors can observe the beavers' engineering work, and a mural by artist Shauna Blanchfield welcomes people at the entrance. The project has drawn national attention, featuring in the BBC series "Wild London" with Sir David Attenborough. A documentary titled "Beavers in Paradise," directed by Matt Brierley, won a special award at the Wildlife Conservation Film Festival.

Academic interest has followed. A peer-reviewed article in the journal Environment and Planning E examined how the Ealing site influences concepts of wild space in cities, describing it as a working example of how urban areas might rethink their relationship with nature. In 2025, Dr. McCormack published a children's book, "Beaver Believers," inspired by the project. That same year, the Ealing Wildlife Group received a three-year £100,000 grant from the HS2 Community and Environment Fund to expand education and outreach.

The project operates through a network of partners including Citizen Zoo, the Friends of Horsenden, Ealing Council, the Beaver Trust, and the Mayor of London. Ealing's experience has encouraged similar efforts elsewhere in the capital, including a project introducing beavers and white storks at Eastbrookend Country Park in Dagenham. Organizers suggest the model could serve as a blueprint for other cities considering urban rewilding and natural flood management.