UPDATE 2-Virgin Money owner CYBG warns on margins as Brexit, competition take toll <!-- no image --> <div>* Shares fall 8% (Adds analyst comment, details on PPI, share movement)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=WQnJe35SeAc:YpafEtpcsGQ: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=WQnJe35SeAc:YpafEtpcsGQ:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=WQnJe35SeAc:YpafEtpcsGQ:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=WQnJe35SeAc:YpafEtpcsGQ:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=WQnJe35SeAc:YpafEtpcsGQ:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/WQnJe35SeAc" height="1" width="1" alt=""></div> Posted by Reuters