My experience is very different in terms of the information I have. If we look across the range of goods as a whole, there are problems with rules of origin outside the customs union.
The second problem with the facilitated customs arrangement is that it breaches article 3 of the General Agreement on Tariffs and Trade—GATT—which is part of the World Trade Organisation rules. Article 3 is the national treatment principle, which says that we should not treat imported goods unfairly relative to domestically produced goods. Because of the track and trace requirements in the facilitated customs arrangement architecture, we will have to treat imported goods differently to those produced and made in the UK.
The third problem is that if we want to make free trade agreements with the rest of the world, the Government are shooting themselves in the foot with the facilitated customs arrangement because article 24 of GATT states that we have to eliminate substantially all trade barriers between constituent trade authorities. If the UK is having to collect tariffs on behalf of the EU, that introduces a barrier that will have to fetter future free trade agreements. I do not particularly believe we can get better FTAs beyond the customs union; I think our leverage as part of the EU is superior, but on a technical level a facilitated customs arrangement, I am afraid to say, is just not going to wash.