UK regulator investigates role of Facebook, Google in ad market <!-- no image --> <div>Britain's competition regulator has launched an investigation into the power wielded by Facebook and Google in digital advertising markets, including the ownership of data.<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=V7DRtsAA9CU:nsrJSsHnRqk:yIl2AUoC8zA"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?d=yIl2AUoC8zA" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=V7DRtsAA9CU:nsrJSsHnRqk:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=V7DRtsAA9CU:nsrJSsHnRqk:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=V7DRtsAA9CU:nsrJSsHnRqk:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=V7DRtsAA9CU:nsrJSsHnRqk:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/V7DRtsAA9CU" height="1" width="1" alt=""></div> Posted by Reuters