I got A's on all of the mocks, and felt really confident until I got to the paper in January. Some of the questions were tricky (The HIV one in particular). I got full marks on the 5 markers though, it was just the HSW and some of the immunity questions that got me. Well I got 67 UMS (1 raw from a B!). So yeah, I am retaking because I want to get an A. If anyone needs any help with revision, or wants to revise with a partner, then I'm happy to help!