Membership now: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, The Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, United Kingdom.

Croatia joined the EU on 1 July 2013.

Future candidates: Western Balkan countries : Albania, Bosnia, Montenegro, Serbia; also Kosovo under UN Security Council Resolution 1244 of 1999.

Iceland applied for membership on 23 July 2009.