My current marks for ILR is like 65% and to get a D, I would need 34/45 - do you all think it's likely to achieve that marks if I were to mug hard now?
Yep. I'm not that bright and I've managed similar feats before. Just don't make it a habit

Also, pretty sure no employers really care what your introductory law subject marks are, so don't stress out TOO badly if you don't do as well as you hope.
Contract is another subject that's worrying me - felt so unprepared - only been reading and understanding principles but not cases and I've yet to memorise anything
I'm just afraid I'll forget the principles/cases in exams.
Pick out the major cases and start memorising their facts - I think there's a part of the exam where you are required to write the facts, principles and judgment of one of the cases you've studied this semester. Maybe a first year law student can confirm (it wasn't like that when I studied contracts)
I haven't done many closed-book exams, but for one of them I crammed last minute and it ended up being one of my best marks.
I took all my lecture notes (which came to something like 120 pages), summarised them down to 30-something pages, then summarised that summary into 11 pages. It's muuuuch easier to memorise 11 pages of notes! You should be able to summarise the principles in each case you study in one line, maximum two. A good law exam answer should be mostly analysis, not regurgitating case principles. (The exception obviously being the part of the contracts exam where you literally have to regurgitate a case you've studied.)
Make sure your notes progress in the order that you would answer an exam question. For example (it's been 6 years since I studied contracts so please don't actually follow the sequence I've put here because it's probably wrong, I'm just writing it as an example):
1. Formation
- if in writing: [case][principle]
- if verbal: [case][principle]
- offer vs. mere puffery: [case][principle]
2. Consideration
- there must be consideration: [case][principle]
3. Terms
- onerous terms: [case][principle]
etc.
Then hopefully once you're in the exam, you'll be able to picture the steps you need to go through to tackle the exam problem.
Crim - did quite badly for class test - just a P - any chance of at least getting a D at this stage?
How much was the class test worth?