BBCE data for entrepreneurs aligned with Law-Robson definitions for towns with a population of 10,000 and over in England and Wales 1851-1911. Definitions of urban areas converted to digital files and GIS from Law, C. M. (1967) The growth of urban population in England and Wales, 1801-1911, Transactions, Institute of British Geographers, 41, 125-43; Robson, B.T. (1973) Urban Growth: An approach, Methuen, London. Detailed definitions and method given in WP 6. The downloads include the total population (from census publications), and the total number of the economically active population from the BBCE broken down by sex, for employers, own-account proprietors, and workers. All data are weighted for 1861 archival loss (E&W) and census non-response bias in 1891-1911.