The history of religion in Britain—as distinct from church or ecclesiastical history—is making an impressive comeback in the consciousness of historians, with important implications for British cultural and social history. Not least affected is the history of Britain in the twentieth century. Fifteen years ago, the well-known social historian Alan Gilbert published his The Making of Post-Christian Britain, which soon became the standard account of the secularization of British society since the eighteenth century. Taking off from careful statistical surveys of Christian church membership and participation that he had done in two earlier books, and looking for explanation to a very broad range of cultural, economic, and social factors, Gilbert presented an argument that has seemed so powerful as to be an almost irresistible account of the apparent fact of the secularization of Britain. More recently, however, both religious historians and sociologists of religion have begun to question not only Gilbert's premises and argument, but also the very concept of secularization. The result of this questioning, exemplified by the books here reviewed, is a major controversy concerning the recent history of religion in Britain.