I think Cambridge, certain Oxford colleges, the UCL quad, RHUL, possibly a few others I have forgotten, and blatantly Sheffield Hallam - that is a sexy uni.
Going to plug the King's Manor buildings, University of York, even though it is not representative of the main campus at all. And as a history student I have business there now and then anyway, particularly since I have to trek out there everytime I want/have to meet my supervisor, lulz.
It's like walking in to a castle (with huge sports fields at the back). Look at that brickwork and decoration. Out on a limb from many other Cambridge colleges though (a bit like St Hild and St Bede is at Durham).