2013 horse meat scandal only found more than 1% horse DNA in Asda's tins of but it also contained four ppb of phenylbutazone, marking the first time since the start of the scandal that bute had been detected in a meat product in the UK food chain. However, one problem raised was over documentation; all of the UK animals with phenylbutazone contamination tested in early 2013 possessed a "horse passport" that allowed the carcasses to be sold for human consumption. The veterinary residues committee (VRC) reminded the public in July 2012 that it had been "repeatedly expressing concern" about phenylbutazone contamination. and recent discoveries
Tesco after Cohen purchased a shipment of tea from "T. E. Stockwell" and combined those initials with the first two letters of his surname, and the first Tesco shop opened in 1931 in Burnt Oak, Barnet. His business expanded rapidly, and by 1939 he had over 100 Tesco shops across the country. Originally a UK grocer, Tesco has expanded globally since the early 1990s, with operations in 11 other countries in the world. The company pulled out of the USA in 2013, but continues to see growth elsewhere. Since the 1960s, Tesco has diversified into areas such as the retailing of