United Kingdom and the euro
The United Kingdom did not seek 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, wherein the Bank of England would only be a member of the European System of Central Banks.
Gordon Brown set out the 'five economic tests' that must be met before the UK would adopt the euro
The UK's Cypriot bases are the only part of the UK to officially use the euro
James Gordon Brown is a British politician who served as Prime Minister of the United Kingdom and Leader of the Labour Party from 2007 to 2010. He previously served as Chancellor of the Exchequer under Tony Blair from 1997 to 2007. He was Member of Parliament (MP) for Dunfermline East from 1983 to 2005, and Kirkcaldy and Cowdenbeath from 2005 to 2015. Brown is the most recent Labour Party prime minister and the most recent not to be from England.
Official portrait, c. 2008
Brown's official portrait during his chancellorship
Brown and George W. Bush, President of the United States, meet at Downing Street, June 2008
Brown at the World Economic Forum meeting in Davos in 2008