The London townhouse belongs to the Phantomhive family. It is only used by members of the Phantomhive family during the Season or when they have to investigate a case in London, such as the Jack the Ripper and Sphere Music Hall Gatherings cases. The security of the townhouse is dubious since Angelina Dalles, Grelle Sutcliff, and Lau were able to trespass the townhouse in search for tea.