There are NO checks coming in from Northern Ireland! It is shipping TO Northern Ireland that is the problem!EU are making it difficult for NI, as the south want. Keep blaming the UK but we are not the problem, and some crazy idiots still want to rejoin.
Protests and fires and violence locally in NI, nothing further.. Learn from the French, slightest annoyance forced on them and they are off blockading ports and ramming boats! Sad thing is Eu wont treat NI fairly until it hurts them.
I've been buying paint from a Polish ebay seller in Enniskillen, no problems sending stuff to England by Yodel, suprisingly quick to arrive.
How will it hurt the EU?
As I have mentioned foreign imports into the UK are being given the light touch. It is British companies trying to export that are having all the trouble.