The first working day of the new UK-EU relationship. We're going to hear a lot this year from all sides (remain and Brexit in UK, EU, etc) using any possible scrap of evidence. But what we need to look for is trends, over time, so a few to think about in this thread... 1/

Obvious disruption or reduction to UK-EU trade flow. Here we may be thinking e.g. of a permanent 10% fall in traffic, or regular queues, or indeed no change. And apart from goods, the same with individual travel, for work, residence etc... 2/

As a reminder we're not expecting permanent scenes like those of the week before Christmas when borders were closed. But 5-10% reductions in UK-EU traffic would not seem to be out of line with economic forecasts of a hit to the UK economy. 3/

Then we'll need to look at whether UK-EU trade is being substituted by UK-non EU trade. This probably should happen to a degree, and in theory efficiencies could come this way. But its also possible that all UK trade falls, with the UK no longer an EU entry point. 4/

Inward investment is another key post-Brexit indicator. There isn't a single obvious data set here, but the impression of the last four years has been a fall off in manufacturing, but not in services, particularly tech. Continuation would suggest economy tilting to services. 5/

As is traditional for this time of year, and more in hope than expectation, my top ten trade / Brexit hopes for 2021...

1 - The UK Government ditches the unnecessary secrecy and engages much more openly with business, NGOs etc about their priorities, and reflects them

2 - Parliament steps up its game on government scrutiny beyond select committee reports and starts expecting answers on why priorities have been chosen, why trade agreements with which countries, what the content should be etc

3 - UK business do their best to keep on exporting and importing, innovating and partnering, to overcome the new barriers in their way, and also to keep shouting for government to remove barriers as they arise

4 - Brexiteers show even the vaguest hint of interest in the views of those who continue to want strong ties with the EU, rather then repeating over and over again, to even the vaguest hint of criticism, "you lost suckers, get over it"

5 - Remainers, rejoiners and the like stop talking quite so much about how the 2016 referendum was stolen from them, which is becoming both history and suggests that 17 odd million people were conned

(NB not confident on the last two)

How to make sense of the increasing number of UK-EU trade disruption stories?

In short - outside of a single market product checks and people working restrictions are inevitable. And outside a customs union you will have tariffs and / or rules of origin.

Detail ---> 1/

The UK decided to leave a Customs Union. Within that Customs Union, no tariffs, just a common external tariff or preferential rates for bilateral deals or developing countries. Hence, distribution hubs in one country for all make a lot of sense. 2/

Outside a Customs Union our choice was tariffs under WTO rules or remove them subject to rules of origin with a deal. We chose the latter, but it means we can't just import from China, rebadge, and get zero tariffs from the EU. As we could until December 31. 3/

Net result of being outside of the Customs Union - it no longer makes sense for the UK to be a distribution hub for the whole of Europe. Particularly when so many neighbouring countries remain in it. No trade deal changes that. 4/

Now, product checks, of the sort causing problems for food exporters (see Scottish seafood). In the single market, we shared regulations, so a safe product in the UK was safe in France. No inspections. We chose to leave that system, as we want to change some regulations. 5/

Delusional. And no way to run a country. Far higher barriers to trade with the EU from Friday. And still subject to EU influence on our laws. To deny this is also to deny the ability to tackle the problems we will face.

We ended up with particularly high level playing field conditions in the EU deal because the UK didn't take the subject seriously. We got a worse deal on fish than anyone thought possible, and got nothing in return. All because of cakeism. Or patriotism as they call it.

Now we face higher trade barriers to our nearest market, which means our businesses need to be even more competitive to overcome them and succeed. Is that acknowledged?

Our neighbours, the EU, use all manner of pressures to keep neighbours in line in terms of trade. That financial services equivalence, pity if you didn't get that. Data equivalence, have 6 months free if you don't change your laws while we make you sweat...

Northern Ireland, as we repeat endlessly, Johnson cakeism of no checks? Somehow no longer mentioned after the EU got what they wanted. See also, fish, level playing field. EU priorities, EU won. Johnson cake, all gone, not eaten.