I only went to about 40% of lectures in the first term and none at all in the second or third (third is usually just an extra couple and a few revision lectures anyway), missing about 120 odd in a row, which was nice. I never done any work whatsoever in those 2nd and 3rd terms, and only 'revised', i.e. learnt, the day before the exams (apart from one when I did it the day before that because I had a Dirty Pretty Things gig in Middlesbrough the night before my morning Contract law lecture). I passed comfortably, nearly 20% over the pass threshold. I am in no way shape or form a genius. Just be confident, but the key is knowing your limits and playing to your own ability. If you ever think 'I really should be attending this lecture/tutorial', then you should attend it. Otherwise, do whatever the hell you want.