Justine Greening has called for a second referendum, labelling the prime minister’s Brexit deal a “fudge”.
The final decision should be given back to the people and out of “deadlocked politicians” hands, Ms Greening said.
She states there are three options: the PM’s deal, staying in the EU or a clean break from Europe with no deal.
Ms Greening, who resigned after the cabinet reshuffle in January, said the referendum should offer a first and second preference vote so that a consensus can be reached.
Speaking on BBC Radio 4’s Today programme, Ms Greening said the government’s proposals were a “genuine clever attempt at a compromise that could work” but “suits no-one”.