May I refer my hon. Friend to clause 5(2)? My right hon. and learned Friend Mr Grieve, in his rather amazing speech which I think we all found very illuminating, said that this was a completely new principle to be applied in British law. Is it not just a translation of an existing principle in EU law into United Kingdom law for the purposes of a smooth Brexit? Is it not, in fact, less exceptional than being a member of the European Union and allowing a court in a wholly different jurisdiction to impose itself on parliamentary sovereignty?