I would agree with Bodin - I really love my macbook but it was really expensive. I got it as a birthday present from my grandparents because i could never afford it on my own.
What do you think about a Toshiba Equium P300-16T ? It has everything you need for uni and its "just" £400. So you don't have to be in the red (I know how to struggle with money because I am a student too)