European Union Bill

I do not think that that is the case. The question is: is it codification or not? That is the question, not how it has come about. If it is not codification but the creation of a new law, the provision exempting the requirement for a referendum does not apply. If it is codification, which will be determined by an objective test applied by British courts in accordance with normal common-law principles, it applies. That would mean that there has been no change in the law of England, however that may have come about.