Quoting Ellkie from 23:07, 8th Mar 2007
The Union bar has a contract with Tennents, thats why we have so many types of the stuff. We also don't have Magners for the same reason.
No it doesn't. But it buys its stock through the Northern Services purchasing consortium of which most (all?) Scottish student unions/associations are a member, and it's the agreements made by NS members at meetings several times per year that set fairly rigidly what gets sold. But I don't see what's to stop them saying "Actually, we don't sell much of Beer X, can we change it to something else instead?". I still don't call four types of Tennents "as varied a consumer choice ... as is commercially viable".