James Cheshire, a geography lecturer at the University College London, created an interactive map of the most common surnames in London.

The map shows 15 of the most frequent surnames in each Middle Super Output Area (MSOA) across Greater London. The colours represent the origin of the surname (*not necessarily* the person) derived from UCL’s Onomap Classification tool. The surnames have also been scaled by their total frequency in each MSOA.

A slider lets you browse through the most common down to the 15th most common, revealing clusters of cultural majorities and minorities.

Hat tip: Flowing Data