I had a scholarship from Royal Holloway. The requirement last year was for 50 distinctions, but they've dropped it to 45 distinctions this year. It's only for certain subjects though (physics, maths and modern languages, I think). They also offer a £1000 bursary to all students coming from an Access course.
A guy from my course got a scholarship to Swansea. Their terms are "Excellence Scholarship: Pass with 33 Distinctions and 9 Merits; Merit Scholarship: Pass with 27 Distinctions and 15 Merits".
I don't know of any other universities that offer excellence scholarships, but I'm sure there must be others.