This discussion will contain a log of changes that have been made to the dataset. With the most current notice also being promoted on the dataset description page.

2026-02-03 (with earlier message posted before this data was available): BNF Code Changes – Update for January Data As we move through the new calendar year, you will see some movement in the information held in the BNF datasets.

The BNF Code Information – Monthly Changes file has now been refreshed. The monthly changes file provides a cumulative record of all amendments to the BNF structural hierarchy, with each month’s additions, removals, and updates added throughout the year.

The December file published in January 2026 is the final version of the 2025 changes file and displays all changes that were made from March to December - (Future editions will provide a complete view of January to December).

The January monthly changes file published in February coincides with the launch of the new BNF version 90 BNF Code Information - Current Year Dataset and displays the latest changes that have been introduced to the new BNF version 90.

The Historic BNF Changes Dataset has been updated to include the 2025 BNF version 88.