Brexit Base Camp: the U.K.’s Long, Hard Climb Begins Now
For the economy, the worst is yet to come. · Fortune

Three months after the U.K.’s momentous vote to leave the EU, the sky still hasn’t fallen in on Europe’s second-largest economy. But with the summer vacation over and the politicians back at their desks, the immense difficulties of what lies ahead are becoming clearer by the day.

First, the good news: After confidence plummeted in the immediate aftermath of the July vote, it rebounded in August as the first hard data showing life carrying on more or less normally. In September, the Office for National Statistics said in a report that the economy was holding steady: “There has been no sign of a major collapse in confidence and, within the data that is available, some indicators of strength.” Banks such as Credit Suisse and JP Morgan have quietly walked back from forecasts of a recession this year.

But as policy makers hash out the details of what the Brexit would look like, it’s looking increasingly likely that another shoe has yet to drop. The Organization of Economic Cooperation and Development, a Paris-based think-tank, said Wednesday that while Brexit wouldn’t hit the economy as quickly as it had predicted, it would hit it harder: it revised up its forecast for growth this year by 0.1 percentage points, to 1.8%, but cut its forecast for next year by a sizable 1 percentage point, to only 1%. Apocalypse postponed, not cancelled due to lack of interest.

Billions could hinge on the details of the deal that the U.K. eventually negotiates with the EU.

If and when the process starts, it will be long, hard, and wickedly complex. All three of the senior “Leave” campaigners who were given appointed ministers to shape the post-Brexit arrangements have now been publicly rebuked by new Prime Minister Theresa May for daring to suggest that the process is easier than it actually is. She distanced herself Friday from Foreign Secretary Boris Johnson, who had told Sky News that he expected May to invoke the now-notorious ‘Article 50’ of the EU Treaty (which triggers the start of a two-year period to negotiate settlement terms) early in 2017, and to complete talks within two years.

It’s long been thought that they only way to move forward with a quick and orderly exit would be to follow an already existing model: such as for the U.K. to stay in the Single Market like Norway, or in a customs union like that between the EU and Turkey, or to revert to the lowest common denominator of the World Trade Organization’s tariff schedules. But the first two are politically unacceptable to Britain, allowing no check on immigration, no escape from EU budget contributions and no recourse against the European Court of Justice’s rulings. The third is inconceivable for all the damage it would do to a trading relationship worth 350 billion pounds ($455 billion) a year. It’s for this reason that the only decision taken by May so far is to reject an “off-the-shelf” deal and aim to negotiate a completely new one.