FORMER Tory leader Iain Duncan Smith said today that Theresa May must resign next month.

The Tory grandee urged Ms May to resign before she does electoral damage to the Tories during the European Parliament elections on May 23.

Speaking on Sky News, he said: “I know that the Prime Minister has already said she’s going.

“I think that what [she] has to do is aim everything now towards departure before the Euro-elections, which would then allow her to step away, having done what she said she would do.”

“Then we can have another leadership election and pick a new leader which is the way it has to be.”

He added that polling over the European elections was “concerning.”

Mr Duncan Smith’s comments came as Cabinet Office Minister David Lidington said that he had had a “good, business-like meeting” about Brexit with shadow chancellor John McDonnell last week.