Help on Oxford and UCL Uni requirements?

I went to Oxford and also got offered a place at UCL. I got 3 As in my A levels (this was taking the 'old style' A level) and 8 A*s and 2 As at GCSE. Oxford will certainly require straight As at A level, whilst I can imagine that UCL will want predominantly As, but a few Bs may be acceptable. I found that most people at Oxford had a mixture of As and A*s at GCSEs which is probably an indicator of the grades you'll need, but I can't really give an opinion on UCL as I wasn't there. It has a good reputation though so I can imagine they wouldn't accept too many C grades or worse.