Granted I have not done or am I doing a Law Degree yet, I do have some useful information which may be of help to yourself.
I myself am an aspiring law student, although I'm not 100% I want to be work within the legal industry.
I do have many friends who've studied law and are studying law at the moment.
It's a no brain-er that it's not going to be a walk in the park. Then again, no degree is going to exactly be easy. Law however is recognized as being one of the harder/or hardest degrees to under take. Hence the high entry requirements from most Uni's.
I've heard and have witnessed a lot of reading is to be done.
I came across a statistic a while back showing that 38% of books taken out of a Universities Library per year are Law related. It might not sound THAT much, but you think about ALL the courses taking place in that Uni.
Not only do you have to read a lot, but you expected to be very close to the English Language. There's a quote floating around the internet I read saying 'a law student can read any word from the English dictionary'. I personally don't agree with that quote, but you get the picture!
What you've got to remember also, is that everyone is in the same position when doing a degree such as Law, as the likely hood is that very few people did Law at Alevel, and although many people will have a fair understanding of the legal system, it wont be utterly solid.
The 1st year will make sure everyone is up to par with each other and so on!