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 any person or thing subjected to public criticism'. In November 2007, Tesco sued a Thai academic and a former minister for civil libel and criminal defamation, insisting that the two pay £1.6 million and £16.4 million plus two years' imprisonment respectively. They have been alleged to have misstated that Tesco's Thai market amounts to 37% of its global revenues, amongst criticism of Tesco's propensity to put small retailers out of business. In August 2013, Tesco was fined £300,000 after admitting that it misled customers over the pricing of "half price" strawberries. In 2007, Tesco was placed under investigation by the