Deliberate avoidance by the government. A referendum will only happen in 2017
if the Tories are re-elected in 2015.
Meanwhile the offer may take some support from UKIP, whilst being fully aware Labour (who may well win in 2015) will not allow a referendum.
Sadly papers such as the Daily Wail will continue to confuse, obfuscate and mislead over all the different aspects of Europe to generate more jingoistic anti Europe feeling.