For businesses of all sizes, big and small, it makes no sense for us to put barriers and risks between them and their customers that do not exist at present.
As the debate unfolds, those who want to take us out of the EU will have to explain what it would mean for jobs, trade, exports and our collective security. On what terms will businesses want access to the single market? How much would they pay? What rules, including free movement, will they have to stick by? Is the strategy to walk away from the decision-making process and still accept many of the rules? Those who advocate Brexit in the name of sovereignty will have to explain why leaving the collective institutions where many of the rules of our economy are decided, and where we are currently represented, would enhance our power and influence. They will have to show why the major markets in the world outside the European Union would view us as a more attractive proposition if we walked away from where the rules are decided and were outside rather than in.