The United Kingdom joined the European Union in 1973. It has negotiated an 'opt-out' from the euro and is thus not obliged to introduce it.
Surface: 244 100 km2
Population: 61 612 255 (Eurostat 2009)
Joined the European Union: 1 January 1973
Currency: Pound sterling (GBP)
Status: The United Kingdom has not introduced the euro. The EU Treaty gives the United Kingdom the right to remain outside the euro area, even when all convergence criteria are met (opt-out). The pound sterling is not included in the Exchange Rate Mechanism (ERM II).
Exchange rate: The current euro to pound sterling foreign exchange reference rate can be consulted on the website of the European Central Bank (updated daily).