I spotted this on the University of Birmingham website today; it may have been around for a bit -- I don't know:
Top 500 World Universities
It's carried out by the Institute of Higher Education, Shanghai Jiao Tong University and correlates all sorts of different factors like awards, citations, articles in prestigious journals. Among UK universities, Oxford and Cambridge both make it into the Top 10. Birmingham just squeezes into the Top 100 at 93. Our marketing people are obviously happy with that and have placed upfront on the website "One of the World's Top 100 Universities".