2013 horse meat scandal negative for horse DNA. products were tested but were negative for all foreign DNA. Of the 37% of beef products tested positive for horse DNA, Tesco's inexpensive Everyday Value Beef Burgers tested at 29.1%. All other reported brands had less than 0.3% horse DNA. These products originated from Liffey Meats and Silvercrest Foods in Ireland and Dalepak Hambleton food processing plant in the United Kingdom. Trace amounts of horse DNA were also found in raw ingredients imported from Spain and the Netherlands. Laboratory DNA investigations were requested by the authorities into possible donkey meat adulteration of minced meat products labelled
Tesco of its products in response, and announced that they were working with authorities and the supplier to investigate the cause of the contamination. In July 2013 Tesco security staff violated the UK Equality Act 2010 by refusing to allow a blind lady's guide dog to enter the Feltham shop. Tesco staff refused to apologise for the violation of the law for 5 days. It was also revealed that security staff had thrice previously ordered a different blind person and his guide dog to leave the shop. Following further incident in 2013 when the manager of Tesco in Sutton ordered a