UPDATE 1-EU to recommend airlines, travel firms offer vouchers valid for at least a year <!-- no image --> <div>* Vouchers are not mandatory and travellers can still ask for cash refund (Adds details on vouchers, background)<div class="feedflare"> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=t5KG7wNuOcM:UWlleVoCSN4: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=t5KG7wNuOcM:UWlleVoCSN4:V_sGLiPBpWU"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=t5KG7wNuOcM:UWlleVoCSN4:V_sGLiPBpWU" border="0"></a> <a href="http://feeds.reuters.com/~ff/reuters/UKBankingFinancial?a=t5KG7wNuOcM:UWlleVoCSN4:F7zBnMyn0Lo"><img src="http://feeds.feedburner.com/~ff/reuters/UKBankingFinancial?i=t5KG7wNuOcM:UWlleVoCSN4:F7zBnMyn0Lo" border="0"></a> </div><img src="http://feeds.feedburner.com/~r/reuters/UKBankingFinancial/~4/t5KG7wNuOcM" height="1" width="1" alt=""></div> Posted by Reuters