Thanks Alex!

a1 - Linear algebra and differential equations
a2 - Complex Analysis and geometry
a3 - Algebra
a5 - Non-Physical Applied Mathematics (Probability and Statistics)
b2 - Algebraic Structures, Finite Fields and Galois theory
b10 - Combinatorial Optimisation/Elementary Number Theory
o3 - Functional Programming and Algorithm Design
o12 - Mathematics education

Oh dear. I am dead...