1. how people find it
I both love and hate it. It depends on my mood at the time. I've always loved the subject but sometimes it can be quite dull. Ironically though the subjects I dislike are often the ones most people like. (Tort. I hate Tort. I love Land and Equity & Trusts though)
2. how easy/hard it is to get a 2.1
If you do all the reading and make sure you understand the subject then its easy enough to get a 2:1 unless you mess up the exams which hopefully won't happen.
3. what the workload is like
However much you make it. If you want a 2:1 you're looking at at least 5 hours a day. First year at my uni was significantly easier though.
4. whether or not I would cope with it as I only got a C in GCSE English (A in English Lit) and I'm not doing English type subjects at AS Level, heard you have to do a lot of reading - if so, like how much? how many books a week/pages etc, are the books complicated?
Err, depends. Last year the average seminar for me (Bi weekly) was 1 chapter or about 50 pages and I had a two seminars every week. Along with that each seminar would have about 5 to 10 cases with each being about 10 to 20 pages long. My modules were Constitutional, Criminal, Contract and English Legal Process.
This year I am relieved if a chapter is only 50 pages instead of the average of 80... one seminar was over 150 pages once. Plus about 10 cases for which the average length is about 30 pages long. My modules this year are Land, Equity & Trusts, Tort and EU Law.
You might also have to read a couple of statutes but most statutes are relatively short.
How easy the books are to read also depends on the books. My EU text book I consider cruel and inhumane, but only because its really poorly written not because its hard to understand. I prefer reading the cases myself and the treaties. Land and Equity and Trusts are considered to be the hardest modules to understand though I find them quite easy and enjoyable, especially Trusts. Tort meanwhile most people consider to be the easiest and its the one I am most concerned about.
Go to the library or to your local university, most will allow a guest to come in and look at their books if you sign in and show some ID. Read some of the different text books and see what you think.
The C in English Language doesn't mean much. You got an A in English Literature so you should be okay, that means that you can analyse texts and remember them well enough. I've found the stuff I learnt in English language hasn't really made any difference whereas Literature is actually much more relevant. Language is important but ultimately if you got an A in lit that means you can write essays fine and read texts fine. Don't worry about it.
What A Levels are you doing? I did Law, Government and Politics, History and Critical Thinking... all of which I found helped. (Except law ironically, except to confirm that I liked the subject.)