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 with regard to these irregularities". The accountancy firm Deloitte had launched investigation into Tesco's misreported profits a week earlier. Tesco had suspended eight executives pending further enquiries by 18 October 2013, including the UK corporate boss Chris Bush, while an investigation into the scandal takes place. The firm is also withholding payments worth £2,000,000 to its former chief executive Philip Clarke and chief financial officer Laurie McIlwee. In 2007 Tesco failed to deliver groceries via online shopping to a university campus in Sussex, offering no refund or apology. This sparked a local backlash from many customers who had similar dissatisfying