Useful textbooks (NB: none of these are compulsory for the course)
Foster, P.C. (1998) Easy Mathematics for Biologists. Harwood Academic Publishers, Australia (ISBN: 90-5702-339-3). Lots of examples for you to work with answers. Good for revision of GCSE level and a bit above.
Aitkin, M., Broadhurst, R.W. and Hladky, S. (2010) Mathematics for Biological Sciences. Garland Science (ISBN: 978-0815341369). We may be biased, but this recent text book should be rather good! It covers the basics of algebra, calculus, statistics and modelling of biological systems.
Reed, M.B. (2011) Core Maths for the Biosciences. Oxford.
Cornish-Bowden, A. (1999) Basic Mathematics for Biochemists, 2nd Edition. Oxford.
Harris, M., Taylor, G. and Taylor, J. (2005) CatchUp Maths & Stats for the Life and Medical Sciences. Scion.
Cann, A.J. (2003) Maths from Scratch for Biologists. Wiley.
Adams, C., Thompson, A. and Hass, J. (1998) How to Ace Calculus: The Streetwise Guide. Freeman.
Wonnacott, T. and Wonnacott, R. (1990) Introductory Statistics. Wiley. ISBN-10: 0471615188.
Whitlock, M.C. and Schluter, D. (2009) The Analysis of Biological Data. Roberts and Co.
NIST Special Publication 811: Taylor, B.N. (1995) Guide for the Use of the Internal System of Units (SI), United States Department of Commerce, National Institute of Standards and Technology, Washington, DC. . A bit on the formal side -- but the official version of S.I. is all here.
Values of physical constants. United States Department of Commerce, National Institute of Standards and Technology, Washington, DC.
A general mathematics teaching site for algebra and calculus.