If I am not mistaken you will need to take the UMAT, Undergraduate Medical Aptitude Test, and your chances of getting an interview is very much based on this. Not because they look solely on this, but because 3As in A levels only accounts for an ENTER score of 98.5, which isn't quite enough unless you do well in UMAT.However, obtaining a top 5% in UMAT(as in top 5% of all the people who took the test) and 3As in A-Levels will almost guarantee you an interview. Then, your interview will be the make or break.Some Unis are beginning to scrap the interview process and some do not require them for international students though, so I'm not sure about that