Physiotherapy!

[confused_x]

I did want to be a primary school teacher but now I have decided I would love to become a paediatric physiotherapist. I love children and my love for sport and physiology woul;d be tied in together which would be a great career for me. The only problem is I do not have an A-level in biology I am currently in my first year of 6th form studying eng lit psychology pe and business, but I would have thought all that you need to know for physiotherapy about the body would be in pe, what can I do because most unis require an A level in Biology, is there any other way around it?