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
Criticism of Tesco online or on various Tesco deals. Tesco was cited in a Wall Street Journal article as using the intelligence from the Clubcard to thwart Wal-Mart's initiatives in the UK. The group has been criticised for its tactics, including allegedly misleading consumers with "phoney" price cuts. For example, advertising huge savings, when in fact they are only lowering the price of less popular items and raising the price of more popular goods. "The Grocer" also named ASDA as the cheapest UK supermarket (based on 33 items). Tesco was second and Sainsbury's and Morrisons joint third. Tesco price check tends to differ