A levels were: Economics, English Lit, Geography, Psychology and Maths. Covered biology and chemistry during an access course a few years later.
I specialised in cellular and molecular biology, picking all of my optional modules from microbiology and biotechnology.
Final year project involved trying to get biofuels from algae. Most of it died and the final yield was pathetic. So much for my attempts to solve one of the great problems of our time.