There’s a new ringtone which has become ubiquitous on mobile phones, an annoyingly jaunty whistle of the kind that someone in flares and dungarees would make in a dreadful 70s ITV sit com after making a double entendre so laboured it only had a single meaning. It’s supposed to be cheerful but it just brings up horrible visions of Robin Asquith to me.

This is what passed for entertainment in the mid 70s in Britain. It was an age when the few light entertainers who weren’t sex offenders seemingly made a living pretending to be one in films. 70s nostalgia is something I just don’t understand.