Presuming you had a high C at AS (i.e, one mark off a B), you would have 209 UMS, at A2 in order to get an A, you would need 480 UMS. So this would mean that next year you would have to get at least 271, i.e. 90%. It's definitely possible but it would be hard work and even more so if you've just scraped a C and in which case you'll need nearer 100%. If I were you I'd resit a few modules to make it easier but definitely aim high, you've nothing too lose but perhaps a lot to gain! (Isn't that a slogan for a loan company)?