Since the introduction of MiFID in 2007, a number of new exchange venues have opened in Europe where trades can be executed by your stock broker. We have partnered Intelligent Financial Systems to deliver you their European Venu Aggregator (EVA) service so that you can see prices being offered by Chi-X, Turquoise, NASDAQ OMX Europe and BATS Europe. In short, to see a complete overview of price data for venues where your trade could (and should) be placed at best price.
Current coverage is around 1,000 of the most liquid stocks. The IFS EVA tab will be available where data is available.
This data is LIVE (with or without login) and updates every 30 seconds.