Results of the EEC membership referendum of 1975 in the UK

In 1975, the United Kingdom overwhelmingly voted to stay in the European Economic Community (EEC) the forerunner organization to the European Union, by 67.2 percent to 32.8 percent, just two years after it had officially joined. Forty-six years later, the UK voted to leave the European Union in the Brexit referendum of 2016, with 51.6 percent of voters voting to leave.