Hi there Bhairava!
I graduated a year ago and (I'm also from the UK) and here are my thoughts on what I did right and what I could have done better.
1) Pay off any bad debts... credit cards, commercial loans etc. There is no point in saving until these are paid off. Get in the habit of paying your credit card off each month... otherwise interest payments will undo any cashback/air miles advantages.
2) Don't worry too much about the student loan... it's a "cheap" loan and the current interest rate is about 3.2%. If you can afford to, put money that you earn/save into high interest accounts (online or ISA accounts) that pay about 5% at the moment. It's more cost effective to put the money in a high interest account than pay of a low interest loan
3) Monitor your spending... my money didn't get wasted on big purchases... it was the odd pre-packed sandwich here, a CD there, a Starbucks coffee somewhere else... run through your statements (this is why I like using a credit card... they itemise better).
4) Focus on your course: a good qualification could return £50,000—£200,000 extra over your career.
Above all, that's about all you can do for the moment! Enjoy your course and enjoy the habits you're starting now.