Duke of Westminster's dairy farm battles heat, price cuts and fertilizer woes

Lea Manor Farm on the Duke of Westminster’s Eaton Estate in north-west England, the sole dairy unit in the Grosvenor portfolio, manages 2,600 Holstein-Friesian cows across 4,685 hectares and supplies Müller and Tesco with more than 34 million litres of milk annually. Recent heatwaves have driven cow productivity down by up to six litres per day, while a 50 percent drop in farm-gate milk prices has squeezed margins, though the farm still recorded a £2.6 million pre-tax profit in 2024 after a technology-led overhaul.

The operation faces compounded challenges from Brexit-induced labor shortages, fertilizer shortages tied to the Iran war, and disease risks such as bovine tuberculosis. To diversify revenue and reduce waste, Grosvenor is constructing a 2.4-hectare biomethane facility expected to produce 72 GWh of renewable gas each year, enough to heat about 6,000 homes. Executive trustee Mark Preston warns that climate-driven extreme weather will further test UK food security, while the farm’s circular approach avoids most synthetic fertilizers, using manure and crop residues as natural inputs. Despite the difficulties, managing director Mark Roach stresses the farm is a commercial business, not a hobby of the duke, whose dividends from the wider Grosvenor group totalled £53.7 million in 2025.