In that case should we travel single animals?
It's not illegal, but it's definitely suboptimal. With the possible exception of a tup who's been trailered to ladies before; once he's travelled to work once, he knows all about it
and is quite happy
How do you licence a return trip from the abattoir?
You put the "round trip" sheep in the front section, and don't open that till you're home again, so they don't touch the ground at the abattoir.
2 movement licenses : 1 sheep home to abattoir, 2 sheep (or whatever you have in the front section) home to home.
Of course you will have to wash out at home, can't use the abattoir's washing out facilities! lol