Against the critique of self-segregating isolationism, the article traces the historical process of Pakistani migration and settlement in Britain, to argue that the dislocations and relocations of transnational migration generate two paradoxes of culture. The first is that in order to sink root in a new country, transnational migrants in the modern world begin by setting themselves culturally and socially apart. Second, that within such communities culture can be conceived of as conflictual, open, hybridising and fluid, while nevertheless having a sentimental and morally compelling force. This stems from the fact, I propose, that culture is embodied in ritual and social exchange and performance, conferring agency and empowering different social actors : religious and secular, men, women and youth. Hence, against both defenders and critics of multiculturalism as a political and philosophical theory of social justice, the final part of the article argues for the need to theorise multiculturalism in history. In this view, rather than being fixed by liberal or socialist universal philosophical principles, multicultural citizenship must be grasped as changing and dialogical, inventive and responsive, a negotiated political order. The British Muslim diaspora struggle for recognition in the context of local racism and world international crises exemplifies this process.