On the principle, the dualist nature of our constitution makes it clear that international law and international treaty obligations do not become binding in the UK until and unless Parliament says they do. That is a reflection of the supremacy of Parliament and of how, effectively, international law gives way to domestic law.
I am grateful to the hon. and learned Lady for several reasons. The first is her intervention in the Miller litigation. That intervention allowed the Supreme Court to find unanimously, and hold on this point, for the sovereignty of Parliament when it comes to international law. Secondly, she has allowed me to give examples of where domestic legislatures have acted in breach of international obligations. She will be familiar with the controversial “named persons” legislation that was introduced by the SNP at Holyrood. It was ruled by the Supreme Court to be in breach of international law, namely article 8 of the European convention on human rights.
Finally, I thank the hon. and learned Lady for allowing me to refer to her point about breaching the rules and the rule of law. May I gently suggest that she direct her anger closer to home: towards her SNP colleagues and those who sit on the National Executive Committee, who, as we speak, appear to be changing the rules to prevent her exclusively from standing as an MSP? Breaking the rules—the SNP could write the textbook on it!