ONS Geography maintains a large number of lookup files which relate one or more geography to another. These lookup files are available to download free of charge from the Open Geography portal.
More information on the geographies can be found within the download files, and in the Beginner's Guide section of the website.
Look up files are provided in CSV format, with accompanying metadata in XML format, product specification document and any other relevant documentation.. CSV files can be read in MS Excel format and all common database applications, XML files can be displayed in any internet browser.
All products contain the nine character coding as well as the old style coding. For further information please see the Code History Database.
Please note that Northern Ireland has not adopted the nine character coding for all it's geographies at present, so information will still be in the current style coding with the nine character code field blank.
Files can be downloaded free of charge.from the Open Geography portal.
Only the latest versions of files are available for download, but earlier versions may be available. Please contact us for details.