My tip top tip would be to read the sticky thread at the top titled "
OASC 'CANDIDATES' and WANNABES, PLEASE READ THIS THREAD FIRST!"
You don't need two A-levels as such, I believe. You need 140 UCAS points, and so long as your course has a UCAS points rating, and it's worth 140 or more, then you should be OK, but you will need to confirm this with the AFCO.