Thanks a lot for going out of your way to do that. I have emailed them LSE about it.(Original post by Martins1)
I had a look online at LSE's website for economics, and i quote that their programme requirement is: "A level Mathematics. Further Mathematics at A level is also desirable but as a fourth subject only"
I think in that case if I cannot change I will stick with my subjects I will do my best with maths physics economics and russian