Hi Hazel - we’ve just launched the ability to view your Beer duty breakdown in a simple table that you can filter using BrewwQL and export to Excel or CSV, which I think should solve this for you!
If you go to the relevant return’s breakdown page, then click View all entries, you should be able to filter that list of entries by invoice number or customer using BrewwQL. You can then export it to share it with any supermarket or contact customers if needed.
Does this give you what you’re looking for?