The Forest City proposal would consume 45,000 acres of largely grade 2 agricultural land—some of the most productive farmland in the country. This has alarmed farmers, environmental groups, and food security experts.
Food security at risk
Britain produces only about half of its own food. Converting prime farmland to urban use reduces national capacity and increases reliance on imports. In a world of climate uncertainty and supply chain disruption, losing 45,000 acres of productive land is a significant risk.
What the developers say
The developers argue that much of the land is "monocultural farmland" that could be replaced with nature—including 12,000 acres of new forest. Critics respond that replacing food-producing land with woodland does not address food security; it simply moves the problem elsewhere.
Carbon and construction
Ecologists point out that building a city of this scale would require enormous amounts of concrete and steel. The carbon emissions from construction could outweigh the benefits of planting new woodland. The comparison to Malaysia's Forest City—a $100 billion "eco-utopia" on reclaimed islands that became a near-empty ghost town—underscores the risk of repeating mistakes.
Alternatives exist
Urban regeneration, greyfield redevelopment (derelict retail parks, offices, industrial estates), and gentle densification of existing suburbs can deliver hundreds of thousands of homes without touching farmland. King's Cross, Salford Quays, and Wolverhampton's Canalside South show it can be done.