Grey squirrels are an invasive pest species. They present a significant threat to the development of healthy, climate-resilient woodlands. Bark stripping weakens and destroys young trees, diminishing woodland productivity and impairing their ability to provide essential ecosystem functions, such as carbon storage, flood mitigation and biodiversity support.

UK Squirrel Accord’s evidence-gathering is an important opportunity to better understand the scale and distribution of the problem. The data collected will provide valuable insights for woodland owners and managers, supporting more effective and targeted management strategies across the country.

BASC’s Natural capital benefits of shooting report highlights the need for grey squirrel control. Management associated with shooting prevents around £12 million in annual timber losses and safeguards an estimated £32.6 million worth of carbon value each year. These measures protect tree health and maintain the long-term environmental and economic value of the UK’s woodlands.

Ian Danby, BASC’s head of biodiversity, said: “Understanding the full extent of grey squirrel damage is crucial for shaping future woodland management. Shooters are ideally placed to contribute valuable data. Surveys like this highlight the importance of targeted, evidence-based control to protect trees, wildlife and the wider landscape. We encourage everyone who can to take part in the survey.”