PM Blair in 2004: "The electorate should be asked for their opinion when all our questions have been answered, when all the details are known, when the legislation has been finally tempered and scrutinised."
The prime minister said the question would be on the treaty, but added that the implications went far wider: "It is time to resolve once and for all whether this country, Britain, wants to be at the centre and heart of European decision-making."

He concluded: "Let the issue be put - and let the battle be joined."

The BBC in 2008 quoting William Hague:
What has really changed between Tony Blair standing at the despatch box and saying let battle be joined in a referendum in April 2004 and the current Prime Minister saying let battle be avoided at any cost and please don't let me be photographed at the signing ceremony? Two things have changed - the general election of 2005 was got out of the way and the government have decided that a referendum cannot be held because they do not think they would win it.
BBC 2013. PM Cameron
David Cameron has said the British people must "have their say" on Europe as he pledged an in/out referendum if the Conservatives win the election.

The prime minister said he wanted to renegotiate the UK's relationship with the EU and then give people the "simple choice" between staying in under those new terms, or leaving the EU.

When the previous three Prime Ministers clearly state they will put the issue to the people, it does not show politicians in an edifying light, when they conspire hellbent on betrayal. Where does that leave democracy?
It is worth repeating the terms of the referendum, many think it contained much more.

Give people the "simple choice" between staying in under those new terms, or leaving the EU.