Boris Johnson has been accused of lying as he contradicted documents produced by his own government to claim there would be no checks on goods between Northern Ireland and Britain.

The prime minister appeared on Sky News on the final Sunday ahead of the general election, and refused to say if he would stand down if he fails to win a majority, potentially becoming one of the shortest-serving PMs in history. He also admitted only 31,000 of the 50,000 “more nurses” his party have promised are actually new.

While the Conservatives retained a lead as high as 15 points over Labour in an Opinium poll, Jeremy Corbyn‘s party enjoyed a four-point boost in a survey by ComRes, cutting the Tory lead to six points, which would put Britain in hung parliament territory.