Some interesting comments on this thread - I agree wholeheartedly with those of Jurisprudence.
There are two points I would make. First, as identified by Jurisprudence, a law degree will cover areas of conceptual difficulty which you won't have come close to at A-Level standard. It simply isn't a matter of sitting down and reading a text book for a few hours and you certainly can't read one from cover to cover in a matter of days. With respect to Not a Lawyer's post above, studying a legal text isn't like reading a Harry Potter. It isn't uncommon to have to study a particular page for an hour in an effort to grasp the concept. I still do it now. Counsel does it. Judges do it. You may need to refer to the authorities to properly understand how that concept developed. Anyone who has had the joys of studying Equity and Trusts will know what I mean. The actual volume of work (as in hours in the library) wasn't the difficult bit for me. It was the fact that it seemed almost physically impossible to understand a principle.
Secondly, does all this mean you should spend every waking hour in the library? NO!! Enjoy yourself! Throw yourself into everything Uni has to offer. Not only will that help your CV when it comes to application time but the dreaded day will come when you have to start your training contract. That, I'm afraid, is when you will really understand what a high volume of work is! All-nighters, weekends, holidays cancelled, unpleasant clients, nasty bosses, aggressive opponents*......ah, nothing beats the law!
Chalks.
*Please take the above with a substantial pinch of salt