Applied science isn't worth taking if you're doing separate science a-levels, because there's just going to be too much cross-over involved so universities aren't likely to credit you for it. I'd just take the chemistry, biology and physics.
Maths is quite a nice subject at a-level, it's easy to do well in if you put the time and effort in. It comes more naturally to some people than others but don't let that put you off because it's a well-favoured subject. If you're really not keen on it then it shouldn't hinder you in chemical and biological terms but it begin to restrict you more on a physics and engineering front.
Most chemistry courses will make you do some maths module at university if you haven't done a-level. There are some universities that require maths, but most are reasonably happy with just having another science so there's plenty of options. Biology and related courses are less fussed about maths than the chemistry ones, although some mathematical competence is helpful. Having chemistry is a good subject for doing biology.