2013 horse meat scandal around 500–600 burgers containing 100% horse meat would need to be eaten to receive the daily human therapeutic dose. Additional tests at that time indicated than none of the products from Findus contained phenylbutazone. Another report found that between two and five percent of samples tested between 2007 and 2011 had phenylbutazone contamination, and that only 50 samples per year were tested. In 2012, 145 carcasses had been tested, and two out of the nine carcasses found positive for bute that year were not reported to the FSA for seven months. In April 2013, the FSA reported it had not
Tesco site as part of a precautionary security measure. This coincided with several other retailers, including CVS and Walmart Canada, shutting down similar services regarding a security breach at PNI Digital Media. The UK Groceries Code Adjudicator found in a 2015–16 investigation into Tesco that some suppliers paid "large sums of money in exchange for category captaincy or participation in a price review". She found some evidence of benefits which suppliers derive from these arrangements, but also recorded a concern—to be investigated further—as to whether the purpose of the Groceries Code was being circumvented by these payments. Tesco Tesco plc, trading