Criticism of Tesco firms, including Tesco and Asda, said they shared shoppers' "anger and outrage". Whitbread vowed to remedy the unacceptable situation on 26 February . The Food Standards Agency's (FSA) chief executive, Catherine Brown also said "it is unlikely we will ever know" how many unwittingly ate horse meat. On 22 May 2007 the BBC's "Whistleblower" programme showed undercover footage detailing breaches of food hygiene rules in a branch of Tesco. The Whistleblower reporter applied for a job following a tip-off from a former employee. Breaches included the sale of products after their sell-by date; allegations that the company illegally and sold
2013 horse meat scandal quantification of the equine DNA in this one burger product gave an estimated amount of 29% equine DNA relative to the beef DNA content of the burger product. This product was manufactured by Silvercrest on behalf of Tesco. At this point, there was no explanation for the finding of 29% equine DNA relative to beef DNA in this single sample. On 14 January 2013 the FSAI informed the Department of Health and the Department of Agriculture, Food and the Marine of the final results. On the same day it also informed the Food Standards Agency in the United Kingdom. The