Since many people are barely aware of its existence, I was pleased to see Commonwealth Day enjoying a splash of media attention this week. It was, of course, because the Queen was back on parade for the first time since her recent illness — and endorsing the Prince of Wales as next Head of the Commonwealth. In recent years, the post-imperial cousinhood has faded from view. When Tony Blair abandoned one Commonwealth summit to watch football on telly, some wondered when, not if, the FCO would simply drop the C. But ‘the club’ is now enjoying a modest resurgence. The three latest recruits have not even been ex-British colonies but, respectively, ex-French, ex-Portuguese and ex-Belgian, and there is a waiting list. The Foreign Secretary, William Hague, is much keener on ‘the Family of Nations’ than his predecessors.