Isn't it just all maths modules? E.g normally you do Pure 1 & 2 and Mech 1 & 2 or stats 1 & 2, meaning you do 4 out of 6 for regular maths, and for further if you do the remaining 2, that's all it is?
ahtesham is right on that^ FM is waste of time...i got a B ...even if u wan to get in Imperial or LSE no FM and A* in math is better than a B in FM and A* in math bec if u tell them about fm they will put a condition on that as well which is usually an A in case of imperial ...