This essay discusses the political thought of Rowan Williams in the context of his leading influences and wider theology. It shows the continuity in his political writing from his early days as a radical to his frequent political speeches and lectures as Archbishop of Canterbury. The over-riding theme is that of ‘interactive pluralism’, which seeks to establish a form of politics with a very weak system of sovereignty. This influenced his 2008 lecture on ‘Civil and Religious Law in England: a Religious Perspective’, which suggested a limited role for parallel religious law codes alongside those of the state. Although this lecture was subject to much criticism, particularly in the popular press, it nevertheless displays a consistency with his strongly disestablishmentarian inclinations, which give a large amount of space to ‘first-level’ institutions in both decision-making and community formation. A healthy society is established through dispute and dialogue between such groups rather than strong centralized power.