Britain is slowly moving towards accepting harsh truths about Brexit

FOR months, as the clock has ticked towards a two-year deadline for Britain to leave the European Union in March 2019, Theresa May’s government has been criticised for being ill-prepared, divided and unrealistic in its approach to Brexit. And rightly so. However, this week it took a belated step towards reality in the first two of a series of Brexit papers, on future customs arrangements and on Northern Ireland. It accepted explicitly, for the first time, that a temporary transition, or interim period, will be necessary to avert a damaging cliff-edge exit in March 2019, and that in this interim period Britain should be in a customs union with the EU.That is a big step forward. It is all the more surprising, because it came just days after Philip Hammond, the chancellor, and Liam Fox, the trade secretary, promised in a newspaper article that, even in an interim period, Britain would be out of the EU’s single market and customs union. The official Brexit paper acknowledges that this may happen eventually, and offers ideas for a new customs regime that, although burdensome and quite possibly impractical, at least tries to minimise the costs to traders (see ). But in the meantime the paper proposes an interim temporary customs union that will be tantamount to staying in the current one. Dr Fox insists that, as is not the case today, he will be able to negotiate free-trade deals with third countries while Britain is in this interim customs union. He is wrong. No trade deal can take effect so long as Britain is in a customs union. And no country will be willing to negotiate the details of any deal until Britain’s own future trade arrangements with the EU are clear.