PP, have a look at;
http://www.caa.co.uk/docs/175/UK%20JAR-FCL%20ATPL(A).pdf
I agree with Jinkster, I got 83% on IFR which means that I could just afford to have one more question wrong.
I found M&B and GNAV relatively easy while I fear meteorology and POF which are still to come. I guess that it is related to my lack of interest in physics.