I am starting year 13 at college, currently with AS levels of BBCE and studying the first three to A-level. I want to apply for Oxford, so I am taking a gap year next academic year to retake all the exams that I didn't get an A in, along with studying the fourth subject to A-level. I hope to come of this with grades of AAAA or AAAB.

My question is, how badly will having to retake my current grades affect my application to Oxford?