The
United Kingdom of Great Britain and Northern Ireland left the European Union on 31 January 2020 and transition arrangements ended on 31 December 2020. Special arrangements have been made for those parts of the United Kingdom and its territories that share a land border with an EU member state.
Northern Ireland The UK (including Northern Ireland) is no longer a member of the European Union Customs Union. However, there are special arrangements in place for Northern Ireland: its trade with
Great Britain and its trade with the European Union are each now regulated by the
Brexit withdrawal agreement (specifically the
Northern Ireland Protocol and the
Windsor Framework), the
EU–UK Trade and Cooperation Agreement, the
European Union (Future Relationship) Act 2020, the
United Kingdom Internal Market Act 2020. These include special provisions for trade in goods between Northern Ireland and the EU which for many purposes are similar to those that apply within the Customs Union, although Northern Ireland remains part of United Kingdom Customs territory.
Gibraltar Gibraltar left the EU concurrently with the United Kingdom. When part of the EU, it was one of the
EU territories with opt-outs and had not been part of the Customs Union. An agreement in principle has been reached between the EU, the United Kingdom, and Gibraltar to negotiate a treaty which would include provisions for trade on goods between the EU and Gibraltar. These would be "substantially similar" to those within the Customs Union. , the agreement has not yet been concluded.
Akrotiri and Dhekelia As already noted
above, the British Overseas Territory of Akrotiri and Dhekelia on the island of
Cyprus are integral parts of the EU's customs territory (and remained so after
Brexit). ==See also==