What EU law triggered the reintroduction of beavers in Britain?
In 1992, while Britain was still a member of the European Union, the EU passed a law requiring member states to investigate which species had gone extinct as a result of human activity and to explore how to bring them back. Beavers were selected as a relatively less controversial candidate for reintroduction because they still had a viable habitat in Britain.
This legal mandate set the wheels in motion for what would become a decades-long rewilding effort. By the early 20th century, beavers had been hunted to extinction across Britain — with only around 1,200 individuals left scattered across Europe and northern Asia. The 1992 directive gave conservationists and scientists a formal framework to push for their return, and beavers emerged as a pragmatic first choice: not too large, not too predatory, and ecologically suited to British rivers and forests.
The first concrete step came in 2009, when two Norwegian beavers — named Millie and Bjornar — were relocated to Napdale Forest in western Scotland as part of a controlled trial. From that single release, Britain's beaver population has since expanded into self-sustaining communities, including the Ealing Beaver Project in West London, where a family of beavers transformed a former golf course into a functioning wetland within weeks of their arrival — solving a flooding problem at a nearby London Underground station that engineers had estimated would cost hundreds of thousands of pounds to fix by conventional means.
"The beavers can do it, probably a fraction of the cost, probably better than we can, certainly more sustainably for the environment."
— Lauren Frayer, NPR Correspondent, reporting for Up First
About Lauren Frayer
Lauren Frayer is an NPR correspondent who conducted the on-the-ground investigation behind this episode, traveling to four separate beaver sites across Britain to report on the animal's return as a climate adaptation strategy. Her fieldwork took her from Napdale Forest in western Scotland — where the first two Norwegian beavers were introduced in 2009 — to the Ealing Beaver Project in West London, where a beaver family has been transforming a former golf course into a wetland capable of mitigating urban flooding. To gather the full picture, Frayer hiked with forest rangers starting at 4 a.m., visited active dam sites, and spoke directly with scientists, veterinarians, farmers, and conservationists on all sides of the debate. This depth of access — spanning remote Highland forests to a flooded London Underground station — gives her reporting an unusual authority on both the ecological science and the real-world stakes of beaver reintroduction in Britain.