stock exchange trade

It is a 15 year old allowed to trade on the London Stock Exchange?
I FTSE100 trading market, but I do not know. Can someone help me?
if youre need permission from the EU citizen, it is possible, but youll legal guardian (usually parrents) but note that its hard to make a profit on small funds, CUS disposal costs. and the stock market is a very complex organization youll have first read.
Trading Floor at New York Stock Exchange (NYSE)