UPDATE 1-FTSE jumps on optimism over Brexit, Hong Kong unrest <!-- no image --> <div>* Avast slumps after No. 2 shareholder dumps stake (Adds company news items, analyst comment, updates share moves)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=3lnqFyR6u-8:slkZxA3YjCw: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=3lnqFyR6u-8:slkZxA3YjCw:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=3lnqFyR6u-8:slkZxA3YjCw:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=3lnqFyR6u-8:slkZxA3YjCw:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=3lnqFyR6u-8:slkZxA3YjCw:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/3lnqFyR6u-8" height="1" width="1" alt=""></div> Posted by Reuters