@WombatChocolate thank you for pointing out the flaw in my suggestion to revert to the old approach, in that it just doesn't scale for today's volume of applicants, most of whom are predicted multiple A*s, so can't be filtered out at the 'prerequisite criteria stage.
Based on this, I believe the best approach would be for applicants to only apply for a college either:
a. once they've firmed Durham, or
b. once they've received their results
i.e. as most universities do with respect to halls of residence.
You also raise a very interesting point about how important/relevant the choice of college should be to a Durham applicant nowadays.
Based on the regular comments on Mumsnet and the various other forums, it does appear to have significant input into applicants' decisions, but, as you say, maybe nowadays, focus should be more on gaining a place at the university itself.
@KittyMcKitty We're not going to agree on this topic so I'll stop. However, I just want to point out that:
1: Lancaster and Yorks' collegiate system are in no way comparable to Durham's - I say that as a graduate of both Durham and York, i.e. direct experience of both.
2: I was a state school educated in the North of England when I arrived at Durham. Yes, there probably was (and still is) a bias towards those educated in the public and private school system - whether that bias is conscious or unconscious only the university admissions department can answer.
Also, undoubtedly, discrimination issues occur/occurred, as they probably also do/did at other institutions favoured by the privately educated, e.g. Bristol, Bath, Exeter, Edinburgh etc., and these are abhorrent. However, they weren't widespread in my college/department (mid 90s) and, from speaking to my nieces - both at Durham currently - they aren't nowadays either.