European Single Market integration: European Union member states form the European Single Market Non-EU states that participate in the EU Single Market with exceptions: Iceland, Liechtenstein, Norway and Switzerland (see also EFTA) Part of a former EU state that remains partially aligned to the EU Single Market on goods: Northern Ireland in the United Kingdom (see also Brexit and the Irish border) Non-EU states with a Stabilisation and Association Agreement with the EU allowing for participation in selected sectors of the Single Market: EU accession candidates Albania, Montenegro, North Macedonia and Serbia; EU accession potential candidates: Bosnia and Herzegovina and Kosovo Non-EU states with a Deep and Comprehensive Free Trade Area agreement with the EU allowing for participation in selected sectors of the Single Market: Georgia, Moldova and Ukraine Non-EU states which have a bilateral Customs Union arrangement with the EU: Turkey (an accession candidate), Andorra and San Marino