Leading campaigners for Britain to leave the European Union dismissed Prime Minister David Cameron's reform deal as a weak document with "no more force than an unsigned contract."
"Dave's 'deal' is not worth the paper it's written on," Nigel Farage, leader of the anti-EU UK Independence Party, told a cross-party Grassroots Out conference in London.
"We're being asked to remain in a union that now resembles a burning building," Farage said. "There is an exit door. I suggest we take it."
Matthew Elliott, chief executive of another cross-party group, Vote Leave, said Cameron "always wanted to campaign to stay in the EU so he only ever asked for very minor changes."
"He will now declare victory, but it is an entirely hollow one: The EU courts are still in control of our borders and our laws, we still send 350 million pounds a week to the EU instead of spending it here on our priorities, and we have not taken back any control," Elliott said.
"Crucially, this deal is not legally binding and can be ripped up by EU politicians and unelected EU judges, so it will have no more force than an unsigned contract," he said.