Northern Ireland Protocol Bill

Will my right hon. and learned Friend confirm what the default position will be if a business has not made an election? Will it operate under EU law unless it positively chooses to use UK regulations? What will the process be for making this choice? Will someone have to file a document with an authority to say that they intend to use UK regulations when they make goods in Northern Ireland? Will there be a public register? Will it be an entirely private choice for a business? Will no one know publicly what they are doing?