Well, it is of course subjective and rankings are quite controversial. I wouldn't argue too much with the top half of that list (Arts aside).What is interesting is that in most rankings, whatever the metrics, the best places (Oxford, Cambridge and then the jostling of a handful of Londeon colleges) always seem to come through. Beyond that, there are often few points separating the pack.In that list, I don't see many notable omissions and there are no poor institutions; one could argue for a re-ordering of the list, especially the lower half, but I think you could reasonably say that there are three tiers:1. Ox+Cam2. London 33. OthersWithin each tier the institutions are of fairly similar merit, and of course there will be some courses than are better than their equivalents in higher tiers.PS Exeter keeps creeping in. It's good, but you seem to be confusing social exclusivity / class profile with academic excellence.