I've just finished a four year joint-honours degree in English Literature and Philosophy. Many of my friends chose English and History, others read English on its own. At this point, it barely matters what we chose. We are classified as 'Arts graduates'. Choose the combination you feel you will enjoy the most, because your degree is about more than feeding your CV for prospective careers in the future. Arts students, from my experience, perform best at that which they enjoy the most. So if you feel you want to spread your education between English and History, go for it. I'm glad I did what I did. I had originally intended to study English on its own, and changed my mind at the last minute. I was able to major in English (and thus finish Philosophy after three years and concentrate on English for my fourth and final year).
As for wanting to become a novelist... well join the club. Out of 120 final year students in my class, about 80 had dreams of writing 'the' canonical novel of the 21st century. We've just put those dreams aside for a while. Most of us have woken up to the harsh realities that (i) we need to earn a living first, and (ii) after reading works of high literature for four years (and longer), we won't live up to the high standards we have come to expect from a 'good book' when we're writing our own.
I don't mean to be harsh. All I would advise you to do is to write in your own time, write for the sake of writing, make the most of your lecturers' experience when it comes to constructive criticism, and get used to the idea that you may have to earn your crust elsewhere.