This paper presents how the Long‐Term Residence Directive has created a status that can be considered as a subsidiary form of EU citizenship. This key revolution has been operated by EU law since this status escapes direct control by Member States that are obliged to grant EU long‐term residence and the rights associated with it to third‐country nationals (TCNs) fulfilling the conditions in the Directive. This represents a fundamental development and may be distinguished from the acquisition by TCNs of national/EU citizenship, which constitutes a prerogative of State sovereignty. Indeed, the recent cases by the Court of Justice analysed below confirm this truly post‐national form of membership and have profound implications for the relationship between borders, territory and population in the EU.