UPDATE 1-UK shares flat in thin deals, stocks trading ex-dividend tumble <!-- no image --> <div>* Energean surges after deal for unit of Italy's Edison (Adds news items, analyst comment, updates share prices)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=uTNeUKeaCOA:7uHmihHeK3c: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=uTNeUKeaCOA:7uHmihHeK3c:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=uTNeUKeaCOA:7uHmihHeK3c:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=uTNeUKeaCOA:7uHmihHeK3c:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=uTNeUKeaCOA:7uHmihHeK3c:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/uTNeUKeaCOA" height="1" width="1" alt=""></div> Posted by Reuters