I really can’t see how, after the last four and half years, the breakup of the UK can be avoided. What a historical irony that a Brexit intended to make Britain ‘great again’ actually brings about the demise of ‘Great’ Britain.

Amid all the announcements today, it's easy to overlook that the OBR has updated its scenario on a no-deal Brexit. It exposes an undeniably hard reality for the Govt that claims that the UK would "prosper mightily" under no-deal next year.

(Short thread)

1. Key chart: a no-deal/WTO/Australia-style Brexit would delay the point at which econ output regains its pre-virus peak by "almost a year to the third quarter of 2023."

In the upside scenario, this cross-over point could be at the start of 2022; in the downside, in 2025. Grim.

2. Next year, a no deal Brexit would reduce real GDP by around a further 2% - as a result of immediate disruption to the border and uncertainty facing businesses. That's on top of the Covid-related contraction.

3. While there's some short-term border disruption, most of the costs come in the medium term: from lost employment; productivity losses; lower business investment.

Exactly the opposite of what the Chancellor said to @AndrewMarr9 on Sunday.

4. Underneath these numbers, output would fall *below* the Covid levels for several key sectors: Manufacturing, professional services, financial services, retail, energy.

All trade intensive sectors that have been spared the same drop in output as the non-tradables this year.

Ten days in and it seems the government's post-Brexit economic policy is to ignore reality, priority and choice, and just claim with no evidence that everything is going to be great. This, needless to say, is dangerous territory. Exhibit 1... 1/

Here's a good example of what is currently passing for UK economic policy. The theory the UK can be 'nimble' in regulations has been present since 2016. In 5 years nobody has found the detail. We presume others might have a similar idea. And trade needs regulations to align 2/

There will of course always be someone to blame. Usually the EU. Because they do indeed want to compete with the UK. This is not exactly surprising. A vague UK idea versus the bigger next door market (or indeed a big one over the pond). Who's going to win? 3/

Next, 'Global Britain' and specifically the Liz Truss speech in the Commons yesterday. To summarise, we are going to do trade deals on everything with everyone while still protecting UK industry and poor countries. Yup, more warm words and no priorities.

Useful example here. The long running EU-US trade battle over food, one claiming to be about quality, the other science. The UK solution. We'll do both! Fabulous, why did nobody think of this before? Unless they did, and found they still had to choose. Note other warm words 5/

I see alot of friends here are getting angry at various Starmer comments on Brexit.
I get its an emotional time, but with respect, alot of people arent thinking rationally right now.

No Starmer hasn't gone full Brexit - we need to look a bit more soberly at things.

A thread.

2/

The anger at whether Labour votes for the deal is one of the biggest, dullest non-issues of the day.

Its Johnson's deal - as he insists on telling us at every moment.
The ERG back it.
Labour's vote makes no difference either way.
I'd prefer Abstain - but I dont really care.

3/

Agonising over this is pointless.
A case can be made for all 3 options.

But ultimately its Johnson deal, the Conservatives deal and Labour MPs voting for it won't change that.
Nobody is going to come back & say it was Labour that brought this deal in 2 years time.
Let it go.

4/

A few people have been upset by comments Starmer wont seek to radically change UKs relationship with EU.

2 days before a deal comes in is not the day to say you will radically change it.

So what is Starmer thinking?

Consider...not 2024 - but

5/

Its very easy for English people to forget that 2 crucial things coming in 2021 will combine to constrain any UK govt policy on EU - regardless of what Westminister thinks:

1. Scottish elections
2. Northern Irish Census

1/ Brexit politics is built on fear. Frightened people tend to seek security in the tribe. Once that tribe might have been the Labour movement, but now in a fragmented post-industrial society it is the nation. Tribal identification is emotional, not rational.

2/ A tribe that feels under threat wants to control its borders, and who enters into its territory. It demands loyalty and solidarity, and its prime virtue is self-sacrifice - economic arguments won't persuade tribalists. Its members want to feel it is strong and powerful.

3/ Tribalism at a time of crisis is intolerant of dissent. The tribe must pull together against its enemies. Dissent and questioning cause division and disrupt the collective effort. Criticism is seen as treason. The Brexit right have ruthlessly exploited tribal psychology.

4/ To understand Brexit politics it is necessary to understand that the working and middle classes are dead as coherent political forces and that frightened and insecure people are now clinging to the only available powerful tribe, the nation-tribe.

5/ The Brexit right understands and ruthlessly exploits basic social emotions. In contrast the centre and centre-left mostly can see no further than the blinkered logic of rational individualism, from which perspective everything else is irrational and incomprehensible.

1/ Quick thread. At the end of the third week of Brexit being "done", I can only say that I'm exhausted.

Immediate pressures on companies who have been trading goods have been on grappling with all of the new customs and regulatory requirements.

2/ It's clear that agrifood businesses have been the hardest hit due to the SPS checks and other requirements.

But for others, the shift from a distributor model to importer/exporter has been a challenge. This hasn't been helped by certain IT system not working as planned.

3/ So are these "teething problems"? Companies are grappling with the new systems & formalities.

Some are, but many others aren't.

Worth noting that freight volumes are still below average. But stockpiles are running low, coming weeks are going to be interesting.

4/ Two issues that are immediately facing many businesses that won't be addressed by sorting this teething period.

First, many businesses are facing the largest shift in their cost base in a generation.

5/ This comes from the cost of dealing with the customs procedures, upgrading IT systems to manage the new requirements, setting up European operating centres to comply with regulatory requirements, new immigration costs, the list goes on.