Maths
Trigonometry
Basic (and I mean basic) algebra
Anyone who has told you that you need anymore is either 'avin' a laugh or trying to frighten you!
Complex numbers, for example, are only of any use in electronics and even then at a very theoretical level. Calculus is not required and neither are statistics unless you want count PROB30 in a weather report! Root simplification? You need to know how to press the square root function on your calculator at CPL level.
Physics
Yep - I'd pretty much go along with all of that but it is only to a basic level. You don't need the knowledge as such but it would certainly make your life easier if those concepts were already understood.
Human Biology
Basic functioning of the eye, the ear, heart, lungs (and other offal!!) is also useful to know beforehand for the Human Factors exams.
Cheers
Whirls