UPDATE 3-William Hill to shut 700 British betting shops after curbs <!-- no image --> <div>* UK gambling firms set sight on U.S. expansion (Adds analyst comments, details on U.S. push)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=zkkjzUZUlIg:rWRsu23-PbI: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=zkkjzUZUlIg:rWRsu23-PbI:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=zkkjzUZUlIg:rWRsu23-PbI:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=zkkjzUZUlIg:rWRsu23-PbI:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=zkkjzUZUlIg:rWRsu23-PbI:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/zkkjzUZUlIg" height="1" width="1" alt=""></div> Posted by Reuters