The 1922 executive committee thinks it has finally laid a surefire trap for Theresa May – by securing a promise from her to hold the second reading of the core Brexit legislation, the Withdrawal Agreement and Implementation Bill, before EU elections in two weeks.

The point is that either the bill passes, and she resigns as soon it becomes law (as she has promised to do), or it flops, which is what most Tories expect, and it becomes unambiguously clear that she can never deliver Brexit – in which case they will force her out in June or July.