National identity, nationalism, patriotism, state formation, and their present-day policy implications now constitute one of the most vital areas of scholarship on British history. In no other period is the debate currently as focused as it is in the long eighteenth century, that crucially contested territory in which older assumptions about a fundamental transition between pre-modernity and modernity have now been called in doubt. This article offers an overview of recent work. It argues that much writing on these years has framed misleading models both of state formation and of national identity. It adds that this period is nevertheless a key one in revealing that the processes at work in sustaining collective identities in the British Isles did not originate with ‘nationalism’ in its historically correct meaning, and need not follow its trajectory.