With firsthand experience I can say that taking economics with business is as monotonous as it is pointless. In my school I had the same two teachers for half of my lessons in the same room, it became unbearable. As if this wasn't bad enough, it came to applying to universities and I found that most of the places I was looking at (top 20 as well) wouldn't accept the two together at A2, so I was almost forced to drop business. You don't need them both either, even if you're doing economics most universities don't need either. Don't focus your A-level choices too much, it looks to me like you've chosen those subjects because you think universities will want them for law, but I can promise you they're not too bothered as long as you're doing academically rigorous subjects. In fact, even maths would be far more valued than business on top of economics. Don't do what I did and make it hard for yourself. History is definitely a good choice, law is an obvious one but by no means necessary - my friend has an offer from Oxford for law and he did sciences and history. In short - do not bother with business. Economics is also not necessary but won't look as bad by itself.