Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, what assessment her Department has made of the potential impact on land managers of the change in the peat-depth threshold used for regulating heather burning from 40 centimetres to 30 centimetres; and what scientific evidence was used to support that change.

This Government is committed to protecting moorlands. In September 2025, we amended the Heather and Grass Burning (England) Regulations 2021 to improve the resilience of our moorlands. The Regulations reflect the latest available evidence to guide sustainable land management and protect areas of moorland where intensive management is known to occur on deep peat. A licensing scheme was introduced alongside the regulations in 2021 and has been maintained under the 2025 amendments. This enables land managers to apply for a licence to burn to reduce the impacts of wildfire where there is no feasible alternative. Burning is one of several tools available to land managers to manage vegetation and reduce wildfire risk. Other land management methods are not restricted by these regulations, which cover roughly 5% of England’s land area.

Defra relies on good quality evidence to inform its decision-making and policy design. Whilst we know that damage from burning can occur at any depth, evidence shows that at 30cm, peatlands are capable of sustaining blanket bog habitat. Natural England’s Evidence Review on the effects of managed burning in upland peatland (NEER155) was one source of information which fed into the decision to amend the Regulations. NEER155 built on Natural England’s 2013 review (NEER004) by incorporating 102 new studies, which were assessed and subjected to the appropriate academic rigour. The overall findings and conclusions of NEER155 remained consistent with those of the 2013 review. It concluded that burning, especially repeated burning, results in a departure from the typical structure of these habitats and can impact how they function. The Government remains satisfied that the Regulations are supported by the available evidence.