European retail traders can only buy and sell UCITS-ETFs, i.e. ETFs that are accesible via European stock exchanges. An algorithm involving an S&P500 ETF, must therefore e.g. use the SRX8 symbol instead of the SPY. Since Quantconnect currently does not provide historical data for UCITs ETFs, algorithms designed for European (divisions of) brokers, can not be backtested. 

Are there any plans to include data for UCITS securities, anytime soon? 

Is there a workaround for this issue, e.g. ingesting historical data from Interactive Brokers or other data sources?