ABSTRACT
In both Battersea and Dagenham, we were supplied by the Employment Exchange manager with a list of all undertakings employing 200 or more workers. In addition, we were allowed by the managers to examine lists containing the names and addresses of smaller undertakings. These latter lists were not necessarily inclusive of all employers, since they contained the names of only those who, at some stage, had notified the Employment Exchange of vacancies for labour; but it is unlikely that many firms employing over 10 workers were omitted from them. In Battersea, the list was arranged by industries; in Dagenham, it was arranged alphabetically.
