Specific conditions apply to the following goods: endangered species fluorinated gas (F gas) and ozone depleting substances hazardous chemicals persistent organic pollutants drug precursor chemicals mercury and mercury added products rough diamonds genetically modified organisms firearms Atlantic bluefin tuna dissostichus spp (toothfish) torture goods In addition to the requirement for export declarations, further requirements may apply for these goods moving from Northern Ireland to Great Britain. Find out more about moving goods into, out of, or through Northern Ireland .