So don't think about where u want to live in the future and if this country will accept my degree and whatnot because that's not the right way to think about stuff. First u need to think what do I want to do with my life, like do u want to go into PPE or law? do what u will love and enjoy the most as ull do better if u enjoy what ur doing and are interested in it. Then check out the unis in london e.g. u want to take PPE check unis in London that offer it, u have good grades u should have a good range of options. And don't think about going abroad right now no point in that ur just going to confuse urself. For now focus on what u are interested and what u want to do. Then check out universities local to u and maybe in different cities as well e.g. Birmingham or Bath. Once u get into university then think about jobs and stuff. Also whatever degree u get should be accepted everywhere so don't worry about it being useless or unusable. Idk if this helps but I hope you figure out what to do, and don't overcomplicate things so much.