and are understood to describe the prospective relationship between the UK and the EU after withdrawal, ranging from hard, that could involve the UK trading with the EU like any other non-EU-member country under World Trade Organisation rules but with no obligation to accept free movement of people, to soft, that might involve retaining membership of the EU single market for goods and services and at least some free movement of people, according to European Economic Area rules.Similarly, in the United Kingdom European Communities membership referendum of 1975, two thirds of British voters favoured membership.
The Referendum Party was formed in 1994 by Sir James Goldsmith to contest the 1997 general election on a platform of providing a referendum on the UK's membership of the EU.
The UK Independence Party (UKIP), a Eurosceptic political party, was also formed, in 1993.
In November 1990 Thatcher resigned as Prime Minister amid internal divisions within the Conservative Party arising partly from her increasingly Eurosceptic views.
In September 1992 the United Kingdom was forced to withdraw from the ERM after the pound sterling came under pressure from currency speculators (an episode known as Black Wednesday).
The question of sovereignty had been discussed at the time in an official Foreign and Commonwealth Office document (FCO 30/1048) that became open to the public in January 2002 under the rules for availability after thirty years.