evidence: Viewed from this perspective, the Northern Ireland Protocol is deeply problematic because it seeks to undermine what was secured through the Good Friday Agreement, by enabling the Republic of Ireland, and the wider EU, to effectively lay claim to, and thereby negate, part of the UK single market for goods, with the effect that the UK single market for goods no longer exists. It has now been replaced by a Great Britain single market for goods and an all-Ireland single market for goods, as part of the wider EU single market. In a context where one of the primary roles of a sovereign state is to uphold and regulate the market, it is not possible to affirm the territorial integrity of the state with its own laws apart from its territorial market and its laws. [...] ‘If the rest of the union has been prepared to allow this arrangement, notwithstanding its implications for those in Northern Ireland who are committed to the United Kingdom, is the United Kingdom the kind of community I want to be part of?’