Margaret Thatcher, campaigning as Conservative Party leader in 1975, in a Europe jumper
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EU referendum: How does 1975 differ from the 2016 campaign?

In 1975, Britain voted in its first European referendum - on membership of what was then the European Economic Community, or EEC.

The BBC's John Simpson reports on how the European referendum campaign of 1975 compares with the campaign under way in 2016.

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