Looking back at key moments from the history of the European Union
The document which formed the basis for what is now the European Union was signed in 1957
In 1963, France stopped Britain from joining the European Economic Community, now the EU
In June 1975, Britain held a referendum on its membership of the Common Market
The British Prime Minister started expressing doubts about the European Union in 1988
A speech by Jacques Delors helped change British trade unionists' attitude to Europe
In 1992 European ministers signed a treaty towards greater economic and political unity.
In 1993, academic Dr Alan Sked started an anti-EU political party
In 1993, Denmark held a second referendum on greater EU integration
In November 1994, Norwegians voted in a referendum not to join the European Union
