Thank you so much for the answer. I do have one further question though. Since Croatia is in the EU (like UK), shouldn't that mean that we have no import duty, as the honey is not going through customs or any other paperwork. As far as we know, we just need to have certificate of the honey quality (which we already do - it is made in Croatia and accepted anywhere in EU as far as we were informed), proper labeling and consignation paper when transporting it to UK.
I am still a bit confused about 12.8% import duty and 20% VAT charge. I apologize for that, we are just beekeepers and taxes can be quite overwhelming to us.