If you are planning on going to RCSI and already have a competitive GAMSAT score then maybe do a little reading on physiology (borrow Guyton and Hall from a library) and watch Acland's anatomy dvds (that's the most memorisation heavy -and thus time intensive - subject in first year) over studying organic chemistry! I think we saw perhaps twenty slides with organic chemistry structures throughout all of first year and none of it was examinable. There's been nothing at all in second year. It's obviously important for GAMSAT but once you've surmounted that hurdle it won't be troubling you again! They do expect you to understand some basic chemistry but a slight grasp of physiology and anatomy will stand you in much, much better stead so you won't being stuck whispering "WTF is the femoral triangle?!" on the first day with your cadaver. Don't worry about being non-sci; you'll be amazed how much science you learn in no time though it might seem like everyone's speaking Urdu at the beginning.
Thank you very much for your advice on the science and for the link to Biologic's post on RCSI GEP1, definitely a bit scary but very informative! I'm doing the GAMSAT again this month to see can I improve the score a wee bit incase the cut-offs jump this year...just hoping and praying that the drop in the RCSI cut-off to 60 last year wasn't a once off. I noticed how quiet the GAMSAT/GEM pages on Boards have been this year - hopefully a sign that less people are trying to get into a GEM programme this year. As soon as I have the GAMSAT over with, I'm definitely guna follow your advice and focus more on Guyton and Hall, Acland anatomy etc. I'm very relieved to hear that organic chemistry isn't a terrifying part of Year 1 GEM that I thought it would be! Thank you again.