What I did:
Copy out all the lecture notes (take a long time, Chemistry@Nottingham)
Read
Then: Copy out again but a shorter version, focussing on the more important areas and areas you arent as strong on.
Then: Do it again until you get the content onto a couple of pieces of A4
Then and only then (and usually the night before the exam) take a look a look at past exam questions.
[Edit] Goto all the lectures (I missed only 2 hours in 4 years)
Put the hours of 9am - 11pm in with <1 hour breaks for food/rest every 3-4 hours during revision
[/Edit]
This is one of the ways you might actually learn the content of the course instead of just what the examiners set. I do not really approve of the revise by doing all the past papers technique and then ignoring sections of the course that dont turn up/you can ignore and do the other question. Certainly there is a case for doing them before the night before but Id rather understand the course as best I can then memorise how to do a particular question.
It got me a first and a better understanding of the subject than people that focus on exam papers primarily.
Focussing on exams imo tended to be a fairly decent way to get a 2:1 which imo has such a range of abilities in it. People that scrape a 2:1 or even are mid 2:1 are often way below the ability of people that just miss out on a first. This is another thread tho