The license agreement means that Google can distribute real-time LSE and Borsa Italiana data free of charge. Previously, the information was only available with a 15-minute delay.

Jarod Hillman, head, real-time data, LSE, says: "This partnership between LSEG and Google is great news for retail investors across the globe. For the first time Google users will have access to free, real-time last-trade prices, allowing them to make more informed investment decisions."

Maxim Edelman, strategic partnerships, Google, adds: "Since the launch of Google Finance in 2006, we have worked hard to provide Google users with the best financial information. The addition of real-time quotes from the London Stock Exchange and Borsa Italiana will enable our users to better monitor market changes, manage their portfolios and track economic and financial developments in Europe."

Google, which introduced real-time pricing in 2008 for the the Nyse and Nasdaq, is also planning to add real-time feeds from Germany's Deutsche Bourse.

The LSE will be looking to cut similar deals with other Internet portals and search engines, providing a new source of revenue for its fast-growing data services business.