Neil MacGregor “left the National Gallery to take over the BM in 2002. It was on its knees. Now it can fairly claim to be the best museum in the world, and its visitor numbers – almost 5m a year – are the highest they have ever been. And it’s all down to this jacketless, giggly bloke in his gloomy and very chilly office – he says he likes it that way – overlooking Robert Smirke’s cold, colossal but loveable facade. So, Neil MacGregor, director of the British Museum, what’s it all about, then?”