Brexit is, as we know, the most important issue facing the government and the country. Except it isn’t. For the Conservatives there is an even more pressing matter: how to prevent a socialist government. Yesterday, the pound plunged after ministerial resignations following Theresa May’s deal with EU negotiators. But were investors spooked by the thought of a ‘no deal’ Brexit or by the possibility of a government collapse, general election and Corbyn in Number 10? Who knows? One thing is for certain: the very worst outcome for markets would be a combination of the two, a Red Brexit.