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 excess of 5%. Tesco in Ireland was convicted of failing to properly display prices by the National Consumer Agency in July 2008. An advertisement in 2011 for pork sausages resulted in complaints to the Advertising Standards Authority (United Kingdom) (ASA), for implying that the meat came from free range pigs. The complaints were upheld, with the ASA agreeing that the advertisement was misleading. Tesco said it was baffled because the farm shown supplied meat from pigs that were born outdoors and reared indoors. A report by the independent retailers group RGDATA contained allegations that Tesco overcharged customers. The report shows