Contrary to popular myth, the exuberant flame of life in the English country house was not extinguished by tears at the end of the Great War. And in his deliciously jaunty and wonderfully knowledgeable book, Adrian Tinniswood, social historian and country house authority, also upturns the story that huge numbers of Britain’s loveliest houses disappeared in the 1920s and 1930s, either through lack of heirs, despair, neglect or the stranglehold of taxation.