Sheep ?

Although we live in a rural area there are not a lot of animals about. People have large sections and usually either own or borrow a few cows or sheep to keep the grass down. This fine specimen, along with a few white sheep, was in a large paddock leading down to the inlet. All of the the others kept their distance but this one decided to eyeball Ollie, who pretended he wasn't afraid.
The lucky sheep are currently residing in a prime peice of real estate which would make a superb section, but I believe the owner has no intention of selling !
I have no idea what breed it is, any suggestions ?