It depends. My plan of action depends on August 2010.
Assuming I get no offers for A100 and and hold an offer for B210 @ Cardiff:
I get AAA/AAB I gap
I get ABB I complete B210, aiming for 60%+ and follow Cardiffs entry to the A100.
If I get no offers for A100 and don't get an offer for B210:
I get AAA/AAB I gap and apply to different schools for the A100 and the B210 again @ Cardiff
If I get ABB I apply to a mixture of Pharmacolegy/biomed degrees and GEP.
GEP could easily be substituted with become a pharmacologist or any other proffession though. Who knows how I would feel at the end of the degree. It could have been a godsend rather than a curse.
Hopefully it won't come to that though, eh?