[cess11]

One reason for recruiting from 'high end' unis is the kind of social networks those graduates are more likely to belong to. They are also more likely to have access to more candidates that you would like to evaluate and possibly give an offer, compared to 'lower end' unis.

I'm not saying that I think this order of things is jolly good, but from the perspective of this kind of business sector it makes sense. Personally I avoid finance related sectors, a stint at a casino operator to get some experience on the CV was enough for me.