A level subjects needed for financial risk analyst/managerWatch
In regards to your options, maths is a must really, and if you have chosen to do further maths along side A level maths then that increases your chances further. Getting into Financial risk management however the most comment option is the study a highly quantitative undergraduate degree. Something along the lines of 'Financial mathematics/computation, Mathematical finance, Quantitative Finance, Economics + Maths. The key components in my opinion is maths/computing.
There are professional qualification you can also obtain along side your studies, These are GARPs FRM ( Financial Risk Manager) Qualification and PRMIA's PRM (Professional Risk Manager) Qualification. Both of these can easily be obtained during your undergraduate degree and depending on what university you go to, you might end up being exempt from some exams.
I hope this helped