Frankly most university's don't care exactly what a levels you do the main worry is employers in the future if you wan't to go into a law career. In terms of a levels that prepare you for studying law anything where you write essays and critically analyze. History and Psychology fit the bill perfectly for us you quote sources and then you analyse them. Politics would give you a small head start doing English legal systems and eu law but not so great that others are at a disadvantage. If you are good at a subject and enjoy like your maths and RS then do them at a level because you will be more likely to get a good grade. if you are predicted a's at gsce you should be fine if you work hard at a level you will be able to get into a good uni no problems so i wouldn't worry about that side of things. The thing i would say is once exams are over do everything in your power to get some legal based work experience even if its just photocopying in the local high street firm one day a week. if you start now that is what will set you apart from the crowd when it comes to looking a jobs when you get to my stage (3rd year llb) You won't be the only one with good grades and good degree what will set you out from the rest is work experince. If your doing gcse now then I think it is very admirable that you already know what you want to do at uni so i am basing all my advice on that assumption that you want to go into a career in law. if you do take my advice it will be the best thing you do in the long run. there is no substitute for work experience and knowledge. If you can't get in at a firm by writing or emailing try a charity like CAB or another advice agency if that doesn't work dress up smartly and go down the crown court or the magistrates or even the employment tribunal watch for a few afternoons if a barrister or a solicitor sees you there a few times they will probably chat to you, tell them what you are interested in, remember most of them where you once upon a time and will try and help if they can. Im not saying this is a guarantee but I do guarantee that good academics alone will only get you so far. I'm sorry if this feels like a lecture but i just wish i could go back in time and give myself this advice. would save me a lot of stress right now.