Growstuff
There are customs checks now when you return to the mainland, they can check passports and inspect vehicles, it will be an extension of that just like Dover or Calais it’s not going to restrict anyone’s freedom if you have a UK passport. Commercial goods will go through customs checks, legitimate goods with a place of origin in NI will be declared separately to those from the South. Parts or ingredients will also need to be declared with place of origin for them as well. All of this is in the Withdrawl Agreement so it’s no surprise to anyone.
Yes, it’s going be a big paper chase.
Traceability is a big thing for the EU goods that come from untraceable sources will simply be rejected so exporters are going to need to be compliant on that.
That’s how it works on the EU / Swiss border they are EFTA members and obey the rules. We will have different rules to stick to, maybe WTO but there will be rules.
Beef, because of common interest. Ireland exports a lot of beef to us, we export a lot of lamb to the EU. Special arrangement will be made in that case, Ireland will be pushing hard for that it is very important to them.