The only UK collection before HWP (in recent years) that has ever really had many sheep or goats was London. It was sad to see the Goat Hills being emptied, because they worked. I find it hard to imagine them ever being re-stocked.
Paignton seems to be taking up some of the slack, but still a whole host of species out there, still grinds with me Colchester getting rid of their Rocky Mountain goats.