UPDATE 1-AstraZeneca guides FTSE 100 higher; buyout powers Cobham <!-- no image --> <div>* Aston Martin slips for second straight session (Adds news items, analyst comment, updates share prices)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=km2o403qkPo:eupTAaD6RA4: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=km2o403qkPo:eupTAaD6RA4:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=km2o403qkPo:eupTAaD6RA4:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=km2o403qkPo:eupTAaD6RA4:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=km2o403qkPo:eupTAaD6RA4:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/km2o403qkPo" height="1" width="1" alt=""></div> Posted by Reuters