Horse meat is much cheaper than beef, and investigators have discovered a murky, often unregulated procession of players stretching from Romania to Mexico, with no clear indication of the point at which it enters the mix of meat sold as beef, exploiting an age-old hankering for Britain’s signature hearty food.<quoted text>
Sangelia is probably right about accidental contamination. Did anyone die or even get sick? Or were they just a little creeped out? If you're going to eat any meat, than any meat is fair game. One kind is no more "sacred" than another. I do agree that the processors should be more vigilant.
The problem is the label says beef and in reality it is horse. If I sold you Victory and gave you a Honda, would you not be upset?