This article rethinks the concept of the “British World” by paying close attention to the voices of those who attended the 1903 Allied Colonial Universities Conference. They identified not one, but three different kinds of British world space. Mapped, respectively, by ideas and emotions, by networks and exchange, and by the specific sites of empire, this article suggests that, in the light of criticisms the British World concept has faced, and in the context of recent scholarship on the social and material production of space, this tripartite approach might offer a useful framework for British and imperial historians interested in the history of the global.