The polling also found that when asked if they supported or opposed the Government’s withdrawal agreement, almost half (49 per cent) of those surveyed said they opposed the plan.

Just 27 per cent said they supported it.

The findings represent a hammer blow to Mrs May’s deal and highlight the scale of the task facing the Prime Minister as she tries to persuade the nation to back it ahead of a crunch vote in the House of Commons on December 11.

Professor Sir John Curtice, president of the British Polling Council, said the findings showed Mrs May’s deal “is still the third most popular option and when you pit it against anything else it loses”.

He told the Telegraph that the data showed “some of the opposition to the deal has abated but it is still a long way from being a popular option”.