British poultry producers say they are facing increasing pressure from imports, as feed that has not been genetically modified becomes scarcer and more expensive, reports The Scotsman.

The UK sources most of its non-genetically modified (non-GM) soya from Brazil but harvests of non-GM varieties are expected to drop from 40 per cent to 20 per cent of the country's total production next year.

Falling availability has led to sourcing difficulties, with only one major soya importer able to guarantee GM-free supplies until next April.

Charles Bourns of the National Farmers' Union, urged producers and retailers to reconsider the industry's GM-free status. "If we don't take a proactive view now, it might happen by default, when stocks of GM-free feed run out," he warned.