Britain's History with the EU
1973: Britain joins the European Community after two failed attempts.
1975: 67% of British voters choose to remain in the European Community
1990: Britain opts out of several provisions of the Schengen Agreement, which allows border-free travel among member countries.
1992: The Maastricht Treaty transforms the European Community into the European Union. Britain negotiates several opt-outs in regards to social, monetary and economic policy.
1997: British Prime Minister Tony Blair announces "five major tests" Britain needs to pass before joining the euro.
2002: Euro is put into circulation. Britain never holds a referendum on adopting the currency.