In the decades-long process of European integration

In the decades-long process of European integration, the UK was a founding member of the alliance called the Western European Union, established with the London and Paris Conferences in 1954. In 1960 the UK was one of the seven founding members of the European Free Trade Association (EFTA), but in 1973 it left to join the European Communities (EC). When the EC became the European Union (EU) in 1992, the UK was one of the 12 founding members. The Treaty of Lisbon, signed in 2007, forms the constitutional basis of the European Union since then.

From the late 1960s, Northern Ireland suffered communal and paramilitary violence (sometimes affecting other parts of the UK) conventionally known as the Troubles. It is usually considered to have ended with the Belfast “Good Friday” Agreement of 1998.[139][140][141]

Following a period of widespread economic slowdown and industrial strife in the 1970s, the Conservative government of the 1980s under Margaret Thatcher initiated a radical policy of monetarism, deregulation, particularly of the financial sector (for example, the Big Bang in 1986) and labour markets, the sale of state-owned companies (privatisation), and the withdrawal of subsidies to others.[142] From 1984, the economy was helped by the inflow of substantial North Sea oil revenues.[143]

Around the end of the 20th century there were major changes to the governance of the UK with the establishment of devolved administrations for Scotland, Wales and Northern Ireland.[144] The statutory incorporation followed acceptance of the European Convention on Human Rights. The UK is still a key global player diplomatically and militarily. It plays leading roles in the UN and NATO. Controversy surrounds some of Britain’s overseas military deployments, particularly in Afghanistan and Iraq.[145]