British clubs and societies spread around the English-speaking world in the long nineteenth century. This article focuses on one particularly large friendly society, the Manchester Unity Independent Order of Oddfellows (MU), which by 1913 had more than a thousand lodges around the world, especially concentrated in Australia and New Zealand. The MU spread so widely because of micro-social and macro-social forces, both of which this article investigates. It also examines the transfer of members, funds, and information between different districts of the society, and argues that such transfers may have smoothed internal and long-distance migration.