It's not so much the issue of having horse in burgers, it's the fact they did not label it. It was a 'Beef' burger, no mention of 29%!!!! Horse meat!!
I try to make sure all my meat has been reared and slaughtered humanely, so wouldn't have found myself buying these products, but no company should be allowed not to label something which makes up 29% of something, no matter how cheap.
I'm not buying the idea that people who eat meat should be prepared to eat any meat. People have their own limits, and should be informed accurately of what they're eating.