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 the Facebook social networking site. In January 2005, Tesco faced criticism for their testing of RFID tags used to collect information on product movement in pilot stores. Critics label the tags "Spy Chips" and allege that they are to be used to collect information on customers' shopping habits. In 2013, Helen Dewdney (also known as The Complaining Cow) brought what is thought to be the first customer legal case against Tesco. She took Tesco to the Small Claims Court after being unable to redeem voucher codes for £80. Tesco told her to use her credit card and said that it