I failed my AS' when I did them too, I got 2 U's an E and a D. I did a BTEC Business course, finished it this year with a DDD and now I'm going to study Journalism at Sheffield, so it's possible, but it depends on what you want to do as not all courses will take BTEC's. Research before you decide on this. Don't get stuck on university rankings either, look into what course you want to do and research uni's that do it and see if they would take a BTEC.