Video: Tesco: we will 'get to the bottom' of horse meat scandal Tesco, the supermarket giant that sold the discount burger brand in question, have apologised. Tim Smith, Group Technical Director at Tesco, said there were only two ways that it could have happened. "One of them involves illegality by suppliers or suppliers to those individual suppliers, or gross negligence, in which case we're still very keen to get to the bottom of this," he said. Health authorities stressed Ireland's policy of occasionally DNA testing food was exceptional, given that most countries do not bother checking for non-health issues in food at all. Contains video from AP