Note: Startting with version 7 Libre Office allow users to choose only PDF/A 1b, 2,b and 3b. Nevertheless, exported files in most of cases meet the UK requirements careated and can be used.

1. Under “File”, select “Export to PDF”

   

2. In the window “PDF options”, select “Archive PDF/A-1a (ISO 19005-1)” and export the document by clicking on “Export”.

   

3. Save the document in the usual manner.

Warning: The “Export as a PDF” button in the upper toolbar does not allow PDF file properties. Use “Export to PDF” from the “File” option.