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
Criticism of Tesco In September 2011 a Greenpeace report revealed that supermarkets in China, including Tesco, were selling vegetables that contained illegal pesticides or at levels exceeding the legal limit. 16 vegetable and fruit samples were taken from Tescos in Beijing and Guangzhou. Among them, 11 were found containing pesticide residues. One leafy vegetable sample turned up two kinds of pesticides, methamidophos and monocrotophos, the use of which have been prohibited in China since the beginning of year 2007. There have been several complaints against Tesco in Hungary, both by customers and employees. Two trade unionists employed by the company were dismissed in