section_path: Potential enlargement/Gibraltar
section_name: Gibraltar
paragraph_text: Gibraltar
  
  As a result of Brexit, Gibraltar ceased to be part of the European Union on 31 January 2020, although for most purposes it was treated as part of it during the transition phase until 31 December 2020. Like the United Kingdom, it had not been part of the Schengen Area but, unlike the United Kingdom, Gibraltar had also been outside of the EU customs union. Owing to a declaration lodged by the United Kingdom with the EEC in 1982, in view of the entry into force of the British Nationality Act 1981, Gibraltarians had been counted as British nationals for the purposes of Community law, and as such they had enjoyed full free movement within the European Economic Area and Switzerland. During the Brexit transition period until 31 December 2020, Gibraltar was still for most purposes treated as an EU territory.
  
  On 31 December 2020, the governments of Spain and of the United Kingdom (advised by the Government of Gibraltar) came to an agreement in principle on a framework for a UK-EU treaty on aspects of Gibraltar's future relationship with the European Union. Both Spain and the Head of the UK Mission to the European Union subsequently indicated with the European Commission their desire that such an agreement be negotiated and that the EU should seek a mandate for that purpose.
  
  Chief Minister of Gibraltar Fabian Picardo stated that he anticipates that the arrangement, which will apply for an initial period of four years, will make Gibraltar's port and airport entry points to the Schengen Area. These entry points will be managed by a Frontex operation. Spain, as the neighbouring Schengen member state, will be responsible as regards the European Union for the implementation of the Schengen acquis. Residents of Gibraltar, regardless of their nationality, are anticipated to enjoy maximised and unrestricted mobility to the Schengen Area. UK citizens who are not residents of Gibraltar will be subjected to third-country national checks when they enter Gibraltar through the Gibraltar port or airport. It is anticipated that the third-country national check will entail two controls, one by Gibraltar's Borders and Coastguard Agency, giving entry into Gibraltar, and one by Frontex, giving entry into the Schengen Area. Picardo likened this arrangement to the juxtaposed controls at Eurostar stations, although he admitted the situation there is slightly different.
  
  On 31 December 2020, Spain's foreign minister, Arancha González Laya said that she anticipated that it would take about six months to negotiate and conclude a treaty but that in the meantime Spain would work to ensure that mobility at the border would be "as fluid as possible".
  
  Apart from the unrestricted mobility of persons, the negotiations will also seek to address maximised and unrestricted mobility of goods between Gibraltar and the European Union, and consider matters related to the environment, the level playing field, social security coordination, citizens' rights, data and matters related to continued document recognition.
  
  On 6 October 2021, the EU agreed to open formal negotiations with UK anticipating an agreement on Gibraltar, and negotiations started soon after. They were ongoing as of February 2022; hopes were they would finish during spring 2022. As of 2025 negotiations were continuing, and in May 2025 Gibraltar's chief minister described a treaty as "excruciatingly close".
  
  An agreement in principle was reached on 11 June 2025 that, when ratified, will apply Schengen rules to Gibraltar.