The big losers from such a scenario would not be the countries of the European Union.
The EU is becoming a key player in the global market for PPE and the UK could miss out if it doesn't strike a deal.
While the English Channel and Irish land border have received most of the Brexit attention, the Irish Sea ports are a major concern.
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In the row between the UK and EU over how to handle state subsidies after Brexit, both sides insist their proposals are consistent with the political declaration.
After a some coronavirus respite over the summer, Britain is contemplating a second national lockdown. This comes as Australia and the UK need each other more than they have for decades.
Brexit could leave key sectors struggling and the devolved administrations have little power to do anything about it.
An EU-UK trade deal will reinforce the certainty and continuity that South Africa, Botswana, Lesotho, Namibia, and Eswatini – plus Mozambique are seeking in their relationship with the UK.
Irish trade with the EU contributes an additional 34 tonnes of toxic nitrogen oxides to air in the UK each year.
The US is a key player in the Good Friday Agreement – but there's an election to think about too.
Whether it's bluster or not, a dangerous message has been sent to the rest of the world that the UK may be willing to backtrack on important promises.
Northern Ireland minister Brandon Lewis doesn't seem to care that the UK would be breaking the law by rewriting the Brexit withdrawal agreement.
This is a system that will likely become even worse given the impact of Brexit and the backlog of cases created by the pandemic.
Apple is now worth more than the entire FTSE 100. It says as much about the UK's premier stock index as it does about American tech.
Trade deals are usually about breaking down barriers. This one is about putting them up.
Abbott has little experience on trade but he packs a symbolic punch.
But they may not bring all the economic benefits that their proponents suggest.
The woeful record of populist governments in dealing with COVID-19 is unlikely to convince voters New Zealand should emulate them.
One strategy is to give negotiators maximum deal-making power. Another is to take as much as possible away from them.
Most populists are only against the system, they aren’t for anything in particular, as Donald Trump’s presidency and Brexit proves. A progressive wave will soon be upon us in response.