According to the newly-published government paper, the UK could ask Brussels to establish a "temporary customs union" after it leaves the EU in March 2019.
But during this period, it would also expect to be able to negotiate its own international trade deals - something it cannot do as an EU customs union member.
Once this period expires, the UK will look to agree either a "highly streamlined" border with the EU, or a new "partnership" with no customs border at all.
No, ma porca troia...
When they go low, we go high! (Michelle Obama)
One, two, three, four, five. I would kick your ass. (Bill Russell)
No one is perfect. That includes both you and I. (Yu Darvish)
The good thing about science is that it's true whether or not you believe in it.