In the first of a new series, Huw Edwards looks back to 1975 and the first European referendum. At the time it was an unprecedented experiment.
Harold Wilson asked whether we wanted to accept the new terms he'd negotiated for staying in the Common Market or come out altogether. By a massive majority, Britain stayed in. So how did the "yes" campaigners achieve such a decisive result and, as a referendum on the euro looms ever larger, are there any lessons for Tony Blair ?
Producer Chris Bond Repeated from Sunday 10.45pm