Lse Econ no Further Maths

Calling out to current LSE students (any major) to ask if triple AAA at the A levels for mathematics, economics, and chemistry is sufficient for a shot at Lse econ? Will be taking TMUA next october as well. I have only recently been considering this course, and henceforth have not taken FM at 17 in preparation for this application. If not, are there any alternative methods to prove my mathematical competency?