Source files are available from the Data Downloads section of the NHS Connecting for Health Organisation Data Service (ODS) web-site, currently:
http://nww.connectingforhealth.nhs.uk/ods/downloads
This address is re-configurable in the application settings section.
Files must be either a csv data file, or a compressed (zip) file containing a csv data file. Upload options are either the CfH ODS downloads directory, or a file on the local PC. In some cases only an Excel data file is provided - this must first be converted to a csv file on a local PC and then uploaded.
Naming conventions of all uploaded csv data files MUST be preserved.