Primrose Hill between Camden and Regent's Park is a preferred London residential area, especially among actors and musicians. Robert Plant, as he reveals in his favourite pub Princess Of Wales, has had a "nice little house" here for years, but he only uses it occasionally when he visits the capital. Otherwise, he lives in the country, near the Welsh border. And until recently, in Austin, Texas. But since the separation from US singer-songwriter Patty Griffin at the end of last year, he has turned his back on the states once and for all. Which is one of the main themes on Carry Fire.