[heraclius]

Bin Laden certainly has been to Oxford, but I’ve not heard of any connexion with the university.¹ I wouldn’t say that those attending language schools and similar tend to interact much with students of the university. With the exception of a few cramming programmes for admissions, the ‘best and brightest’ (I assume by this you mean those sufficiently academically able to get into Oxbridge as matriculated students—I daresay the average Imperial mathmo is brighter than the average Cambridge land economist) tend not to take courses in Oxford outside the university, since they mostly use the name ‘Oxford’ to entice gullible tourists who don’t realise that these places have nothing to do with the university.

1: http://news.bbc.co.uk/1/hi/uk/1595205.stm