LONDON—The price of bond market data has risen by half over the past five years, which could prompt some users to quit the market and damage liquidity, industry body AFME said on Thursday. Big banks and asset managers already say that data on share trades is too expensive—a complaint rejected by exchanges—and the Association for Financial Markets in Europe (AFME) is now also targeting fixed income data costs. The European Union, keen to deepen its capital market after the departure of Britain from the bloc, has proposed a “consolidated tape” which collates and gives access to real time bond and stock trades to increase liquidity and transparency. Britain has also floated a bond tape plan, but a tape itself will not solve the fundamental issues of data costs, AFME Chief Executive Adam Farkas said in a statement. “If left unaddressed, some market participants might be forced to scale back their …