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
Criticism of Tesco the SFO, who took matter out of the hands of the Financial Conduct Authority, the City's business regulator. The UK accountancy regulator, the Financial Reporting Council, is also reported to be monitoring Tesco. Tesco's auditor PwC declined to comment. It found that they were overstated by £118m in the first half of this year, by £70m in the 2013-2014 financial year and by £75m before that. Warwick Business School's Prof Crawford Spence said: "Now that Tesco are being investigated for fraud by the SFO, the Financial Reporting Council have yet greater reason to start an investigation into the auditors' role