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 shop in Liverpool was the first to use the format brand 'Tesco Superstore' above the door. Tesco operates a number of in-shop cafes, but also began to introduce new restaurants in its shops from 2013 under the "Decks Carvery" brand. Tesco Express shops are neighbourhood convenience shops averaging , stocking mainly food with an emphasis on higher-margin products such as sweets, crisps, chocolate, biscuits, fizzy drinks and processed food (due to small shop size, and the necessity to maximize revenue per square foot) alongside everyday essentials. They are located in busy city-centre districts, small shopping precincts in residential areas, small