I agree that it is in everyone’s interests that we co-operate with all our friends in the European Union, and in particular with Ireland. My hon. Friend is right. Northern Ireland is part of the United Kingdom—a separate jurisdiction and a separate sovereign country—and therefore there are differences. As I have said, the best way for us to leave the European Union—the way that will protect so many of the things that have been achieved in the past 21 years—is to leave with a negotiated agreement.