Sorry, but an A-level in a biological science is essential for admission to any university course in physiotherapy when entering straight from school..
The only alternative routes might be through one of the following:
a) the NHS Cadet scheme ;
b) starting as a physiotherapy assistant and taking a part-time degree course while working ;
c) taking a post-graduate course after obtaining a good (i.e. 1st Class or 2-1) degree in either Sports Science or Psychology
The above information is taken from here:
http://www.learndirect-advice.co.uk/helpwithyourcareer/j obprofiles/profiles/profile435/
Information about starting as an assistant physiotherapist is here:
http://www.learndirect-advice.co.uk/helpwithyourcareer/j obprofiles/profiles/profile1271/
Information about NHS Cadet Schemes can be found here:
http://www.nhscareers.nhs.uk/nhs-knowledge_base/data/522 6.html
Hoping this helps,
Chris