kalidasa thank you for posting as it made me feel less isolated.
Oxford is such a fantastic place, so much of what happens there is a product, not only of the teaching and tutorial system, but also of the informal discussion and debate and sharing of ideas which happens over dinner, in the pub, sharing the extra curricular activities, in a way which just cannot happen in London because London is more spread out.
In the Turf tavern, DS met and chatted with 3-4 (not brown) other school contemporaries, just in the space of 20 mins waiting at the bar- it is the informal sharing of ideas and creation of networks between the intelligentsia which has the potential to lead to innovation- for example the creation of the Royal Society in the last century.
Thus it is a shame if Oxford (and by the sound of it, Cambridge though I have no direct experience of that) -for whatever reason- appears to exclude a significant intelligent group- and I wonder if this is what has contributed to the rise of UCL, Imperial and LSE in the world rankings.
I was startled by the lack of ethnic mix in the great hall at Wadham (whilst also amazed and delighted at the architecture) partly because at both the DC school there is no apparent shortage of Oxbridge acceptances of brown people doing what we laughingly call the 'brown subjects': i e medicine. maths, economics and management. Hence I was not expecting the mix I saw. Perhaps the acceptances are different for different colleges.
It would be interesting to know the statistics of acceptance by subject for each college broken down by ethnic group as well as school background.
As you say, it is not clear whether it is the candidates who, feeling uncomfortable, decide not to apply to Oxford, or Oxford tutors, who. feeling uncomfortable, are less non verbally approachable, and decide that the candidates are 'not Oxford material'.
I'm not referring to international students here- I am talking about those candidates born and brought up in this country. It is possible that non of this may matter- horses for courses as they say.