Britney Spears: Wembley Arena, London

IN CERTAIN SOCIAL CIRCLES it’s entirely acceptable, if not positively compulsory, for gentlemen rock journos of a certain age to swan about like leather-clad rutting bucks at the very peak of their panty-peeling powers and potency. For with the passing years, popular music that purports (and in many cases is actually believed) to be at the very cutting edge of libertine rock rebellion is steadily metamorphosing into the exclusive preserve of the reluctantly middle-aged swinger.