On June 4, 1975, I sat down at my clattering typewriter in the offices of the Daily Telegraph in Fleet Street and embarked on a melancholy task. As one of the leader-writers opposed to Britain’s membership of the European Economic Community (as it was then called), I had been asked by editor Bill Deedes to write a fairly light account of the referendum campaign that would appear on morning of the vote. Bill said he wanted my squib to offset the solemnity of the editorial, but my suspicion was that he was a secret No voter who wanted it to…