Hallam Mills, at Bisterne Farms, is a dairy and arable farmer with forestry who farms alongside the River Avon in Hampshire. He is part of the Environmental Farmers Group (EFG), a farmer-led co-operative covering over 130,000 hectares. EFG has been supporting its members in accessing current and future BNG markets. Hallam is President of the Stable Family Home Trust, an organization helping adults with learning disabilities lead more independent lives. He is a former Verderer of the New Forest, and Deputy Lieutenant of Hampshire.