Definitely get the Chemistry for Biosciences for chem module, I just finished my first year and barely touched the book; only to read it over summer and discover 100% of the assessments subjects including the chem group presentation is included in the book, so make sure you get hold of it. I also found Brock Biology of Microorganisms and Instant Notes on Biochemistry very useful, make sure you get them. Pretty sure they are all available from the library.