England – The company, Anchor Catering Ltd, produces up to 10,000 sandwiches every day.  Thousands of sandwiches supplied to schools, hospitals and businesses in the South East may have been infected with listeria, food watchdogs say.  Kent-based Anchor Catering Ltd has supplied food thought to have been contaminated to local authorities in Kent, Sussex, Surrey, Essex and London.  The Food Standards Agency (FSA) said as yet there had been no reported cases of illness caused by the sandwiches.

Symptoms of the listeria infection include fever, flu-like illness and diarrhoea. They can take up to 90 days to appear.  The Health Protection Agency said the pre-packed sandwiches had use-by dates between 1 February and 14 March.