This is so.... funny(ish).
Horse meat has been found in 100% BEEFburgers made for Tesco, Lidl, Aldi and Dunnes - up to 29% horse. There are also bits of pig in there.
So, us Brits have been eating horse, and Jews and Moslems have been eating pork... well, those of us who buy these things have. There is no health risk, but culturally and religiously it is unacceptable.
Are we surprised? Big business will do anything to reduce costs and maximise profits. Bon Appétit.