What is in our national interest is ensuring that we continue to have a good trading partnership with the European Union once we have left. That is why we have put forward a proposal, which is reflected in the outline political declaration, for a free trade area in goods. It is why we have also put forward a proposal that would ensure the frictionless trade of goods across the border. The right hon. Gentleman and I disagree. A customs union is not the only way to ensure that we continue to have a good trading relationship with the European Union. We have put forward a proposal that is reflected in the outline political declaration to achieve that, while also ensuring that we are able to take advantage of operating an independent trade policy.