Look, there will be some for whom this debate is partly about what happened in the referendum. Others will want to have nothing to do with anything that is linked to the European Union in any way. I am looking to see where the consensus can be in this House, and I think there is a possibility of a consensus around a customs union. We can have a separate debate another time on the wider regulatory alignment—on which the hon. Gentleman and I have particular views—and on what other aspects of regulatory alignment, or of a single market, we may each care about. For now, the focus should be on a customs union, which does not prejudge the conclusions of some of the wider questions.
I want to say something about the common external tariff, because I think this bit gets lost too often. If we are in a customs union, we have the common external tariff, the consequence of which is that not only all those products, but all the components and agreements of the products can spin back and forth across different borders within the EU and not have to face rules of origin checks. Many businesses are particularly concerned about the rules of origin checks, because that means that they have to account for where the different ingredients come from. If they suddenly change the mix of ingredients in a product or if they suddenly change the source of their supply, they might also suddenly have to change their evaluation of the rules of origin and fill in different forms. That is a huge ongoing burden for businesses, employers and particularly for manufacturers. It is not just a one-off cost or an easy thing about ticking an online box.