I going to reinforce what Jaybones mentioned. Flip the birdy at a BBD, study solid and I'm sure you will churn out some A's and B's.
My short story is, I studied a National Diploma Music Technology as my Major and Japanese as a minor @ College. For my major, I was predicted a triple Pass in my first year. I decided that I didn't want none of that, so logged off facebook, turned off the XBOX, studied hard and got a Distinction-Distinction-Merit (equivalent to AAB/320+ UCAS points), totally proved them wrong. Unfortunately I applied for BA Japanese way past the deadline so I got rejected.
So I contacted SEAS and told them my sob story and how I was coming back to take over SEAS and a "please accept me next year, please please please" lol. I think it was Rick Siddle who I later met up with that said, "aww what a sad story, but how about chill out for a year, go to Japan and relax, come back and sumbit your UCAS application nice and early, making sure you nail your personal statement boy!"...so I did
My personal advice, if you really want it, never give up! Even if it means doing something else for one year to get there. Ace the personal statement and submit it nice and early. If you have not already, attend an open day. Tons of information and motivation after you leave an open day..or in my case two open days.
You can do it!
I'll be there from 21st July until September the 4th. I'll be stay be staying in Sakai City again but will most likely use and abuse a J.R Rail pass as usual. I think Fran is coming out mid august for a few weeks too. What you thinking, you wanna meet up out there?