Aside from the fact that all of the material is concentrated into one exam session; Mathematics looks roughly the same, and Chemistry looks harder yet much more fun. Skipping over most of the multiple choice questions, the first question on the first writing paper was a moles calculation much more in-depth than the stuff we do at A level. In spite of increased difficulty of the papers though, the grade boundaries seem very low, which means it's probably not too difficult to get high grades. (Apparently 55 and 48 out of 120 to get D3 in Mathematics papers 1 and 2, that's striking when an A at A-level is almost always 60+/75)