Maybe you're older than you thought Blacksheep?
It was some time ago, but I'm reasonably sure I did quadratics and simultaneous equations in the 3rd year, a very basic mention of differentiation in the 4th year before doing O-level, then rather more calculus in the 5th year for AO level. A level got as far as Laplace transforms, second order differential equations complex algebra and quite a lot of mechanics and stats. First year degree was mostly more of the same but deeper with more applications and lots of numerical modelling (starting at Newton-Raphson and progressing upwards), and second year degree a lot of fairly obscure methods such as the aforementioned calculus of complex numbers - which I'm afraid rather passed me by although I suppose I must have passed the exam at some point.
I'm not that young, I did go to a Grammar school before the worst excessives of certain lefty governments decided to turn them all into the comprehensives that my kids have to suffer because I can't afford to send them elsewhere.
G