Margaret Thatcher had just become Leader of the Opposition in February 1975. We were still trying to get used to her tone of voice. So was she. Margo Leadbetter’s tones were more bearably produced, but as a strident lady who never saw the funny side of anything (and worse, didn’t see why anything should have a funny side), she conformed to the same type. Yet her self-righteousness commanded some support. Nobody who sees it forgets Margo’s visit to the council rates office, where she outlines which of the charges she’s not going to pay. “Just who do you think you are, Mrs Leadbetter?” protests the clerk. “I am the silent majority,” announces Margo – a resounding contradiction in terms, especially the way she says it.