Oh well, different peoples experience, that's what I was told, that they were recorded separately and I shouldn't use the sheep ones for goats.
Caused problems as I had animals with the same individual numbers, nobody could tell the difference or read UK070.... and UK70.... as different.
I've the same flock / herd number but after trading standards and the abattoir recorded goats as sheep a few times I now have goat numbers starting 400..
would have been easier just to use the same ones.