Welcome, to the maddest week yet in Brexit, in which rebel Conservative MPs are expected to join forces with Jeremy Corbyn in a bid to create a law at high speed prohibiting Britain’s departure from the European Union without an agreement being in place.

What could possibly go wrong?

Quite a lot, it seems.

At a meeting held at Chequers, his country retreat yesterday, the Prime Minister decided that any Tory MPs who votes against the government to block no deal or abstain will have the whip withdrawn and be prohibited from standing as a Conservative candidate at the next general election. This is a bold move, particularly because the group of rebels includes a former Chancellor of the Exchequer and several other prominent figures and ex-cabinet ministers. And Oliver Letwin.