Horse meat eaten without the knowledge of the consumer, due to accidental or fraudulent introduction of horse meat into human food. A 2003 Food Standards Agency (FSA) investigation revealed that certain sausages, salami and similar products such as chorizo and pastrami sometimes contain horse meat without it being listed, although listing is legally required. The 2013 horse meat scandal involved multiple products being recalled from shelves due to unlabelled horse meat in amounts up to 100% of the meat content. The issue came to light on 15 January 2013, when it was reported that horse DNA had been discovered in frozen beefburgers
Tesco Ireland UK, but not doing the same in Ireland. This is putting pressure on prices in Ireland as surplus poultry meat from the UK is being dumped on the market. The Irish Advertising Standards Authority in January 2009 found that Tesco Ireland advertising was misleading. Britain's Advertising Standards Authority said a leaflet produced by Tesco Ireland Ltd, was ‘‘irresponsible’’ and breached clauses in the advertising code on substantiation and weight control in May 2010. Tesco pleaded guilty and was fined, after sending unsolicited marketing emails to a number of customers and for having a problem with the email "opt-out" option. The