Justine Greening is urging the prime minister to drop the “untenable” Chequers plan rather than waste vital months trying to make it work TIMES PHOTOGRAPHER JACK HILL

Theresa May’s Chequers Brexit plan is now “more unpopular than the poll tax”, a pro-European former cabinet minister claimed today.

In another unwelcome intervention for Downing Street, the former education secretary Justine Greening described the proposals as “untenable” with only 15 per cent support from the public. She called on Mrs May to drop the plan rather than spending “vital” months trying to make it work.

“Chequers is now dead and there's no point having a government spending two vital months working on that when what it needs to do is start working on an alternative route for us,” she told BBC Radio 4’s World at One.

“The biggest problem for me is how people see this. The Chequers deal is now more unpopular with…