Its now very difficult to get decent raw meat, I used to be able years ago to go to a local Knackery, and Abattoir, but that has all stopped, my Mate who races Greyhounds bought raw dog mince from a Butcher, I phoned the butcher and asked what was in it, he said stuff from the Abattoir and my own.
my mate bought some, and gave me a pound to try, the dog refused to eat it.
Ive yet to see Dog Beef mince that just contains Beef, theres usually offal in there as well.