Last month I had the honour of interviewing Lord David Blunkett. We – of course – discussed his time at the heart of the New Labour government as Education Secretary and Home Secretary. But we also discussed his long tenure as leader of Sheffield Council in the 1980s, where he implemented what he called at the time “Municipal Socialism”. It was, of course, a very different time. Not least because the cities trying to implement it were working against the hard right Thatcher government.