Warning: massive post
I really can't think of anything
too specific to LSE, other than making sure that you have good extracurriculars that are mentioned in your P.S. and tied in somehow to Law. These, for example, could be being a member of your school debating/MUN/EYP club. In addition, there's plenty you could do that relates directly to the subject. Since I'm guessing that it's gonna be hard for you to find work experience from this point onward, you could still go along to your local country court on weekends and keep track of a couple of cases, or pick up a few books to read before finishing your personal statement and mentioning what you thought about them/learnt from them.
I found these four being suggested on LSE's website ages ago:
I read through the last one (by Gearty, who's at LSE), which can be found as a free PDF online.
Then, of course, you could look at a legal issue in your EPQ (which I presume has been started already), and again mention what you learnt from it in your P.S. I've even heard of people volunteering in legal clinics (not doing any legal work, just administrative/secretarial stuff) in Year 12.
I think the key thing to remember is that LSE puts a lot of weight on P.S.s because it has so little else to go on, so really scrutinising it and making sure it's of a top standard is vital. Students on TSR go on a lot about "good personal statements" without necessarily acknowledging that the best ones are
evidence-based and have a lot of hard stuff behind the wishy washy "why I want to study xyz". While it's too late for many to get work experience/start an EPQ/rack up any particular achievements in some extracurricular, there's still a lot that can be done in a couple of months (assuming you aren't also applying to Oxbridge).
I have very limited information on grades, but I've spoken to people who have gotten in with a B or two in GCSE, albeit with their other grades being A*s (one girl I spoke to on Offer Holders' Day had 9A*s 1B 1C for example). However, do keep in mind that the average Law student there got 531-574 UCAS points at A-level/IB (depending on whether you're looking at the
CUG or the
Guardian rankings), so showing that you can reach grades like that is a definite bonus. For context, an A*A*AA at A2, with an additional B at AS level (which is what I ended up getting this year), was 570 UCAS points under the old UCAS tariff system.
This page breaks down what LSE LLB undergrads achieved last year.
How can you show that? Having a solid history of top grades (at GCSE/AS), that can be used to support the case for an equally good set of A2 predicted grades
Of course, there will be exemptions to this rule for people with extenuating circumstances or really exceptional P.S.s, but the better your grades are, the higher your chances! How low your grades can be without you being rejected depends on the cohort you're being assessed against and the number of offers the admissions team is willing to give out. Also, keep in mind that you don't have to provide UMS, even though they will obviously see your AS module grades (if available).