5 euro note founded on 1 January 1999, when it became the currency of over 300 million people in Europe. For the first three years of its existence it was an invisible currency, only used in accountancy. Euro cash was not introduced until 1 January 2002, when it replaced the national banknotes and coins of the countries in eurozone 12, such as the Irish pound and the Austrian schilling. Slovenia joined the Eurozone in 2007, Cyprus and Malta in 2008, Slovakia in 2009, Estonia in 2011 and Latvia on 1 January 2014. The changeover period during which the former currencies' notes and coins
United Kingdom and the euro United Kingdom and the euro The United Kingdom has never sought to adopt the euro as its official currency for the duration of its membership of the European Union (EU), and secured an opt-out at the euro's creation via the Maastricht Treaty in 1992. Polls have shown that the majority of British people have been against adopting the euro, and in a June 2016 referendum the UK voted to withdraw from the EU which would virtually eliminate the chance of any future adoption. Despite never being a member of the euro, the currency is used in the UK's Cypriot territories