This article looks at the ways in which the Panacea Society – a heterodox, millenarian group based in Bedford during the inter-war years – spread its ideas: through personal, familial and shared belief networks across the British empire; by building new modes of attracting adherents, in particular a global healing ministry; and by shipping its publications widely. It then examines how the society appealed to its (white) members in the empire in three ways: through its theology, which put Britain at the centre of the world; by presuming the necessity and existence of a ‘Greater Britain’ and the British empire, while in so many other quarters these entities were being questioned in the wake of World War I; and by a deliberately cultivated and nostalgic notion of ‘Englishness’. The Panacea Society continued and developed the idea of the British empire as providential at a time when the idea no longer held currency in most circles. The article draws on the rich resource of letters in the Panacea Society archive to contribute to an emerging area of scholarship on migrants’ experience in the early twentieth-century British empire (especially the dominions) and their sense of identity, in this case both religious and British.