This is totally subjective but psssst French psssst! But then again, politics is very interesting... Sorry I'm not much use!
Do you have any idea what you'd like to do after A levels? This might help?
As far as eng. combined and eng. lit. go, I have heard that unis prefer eng lit. over eng. combined, but this by no means means (?!) that they won't accept eng. combined... and I think if you want to do it, maybe you should do it regardless of unis' preference... but really I don't know much, so sorry this was a waste of a post really!