Bernard Matthews Foods is to stop selling turkeys raised outside the UK, a move designed to address concerns that its outbreak of bird flu two years ago may have been caused by infected birds imported from subcontractors in Hungary.

Jeremy Hall, who coordinated the company's response, said "many learned people had their doubts" that the virus was imported in carcasses or equipment travelling from Hungary to its plants in East Anglia, but the move "removes any potential risk".