About 70 staff were kept on over Christmas to cope with extra demand and some are expected to remain on-site until March working in the plant's cold store and transport department.

BBC: Fenstanton dairy ceases production after 86 years

Twenty-four hours later, a consignment of beef in a County Down cold store tested positive for horse DNA. The samples taken from Freeza Meat in Newry were found to be about 80% horsemeat.

BBC: Burgers

Darker-fleshed fish that swim in cold, open waters, such as tuna, herring, and mackerel, store fat in their flesh and are high in omega-3s.

CNN: How to buy the best fish