You should inquire with the relevant customs authorities about your trade between Great Britain and South Korea. In particular, the rules of origin agreed under the UK-South Korea trade agreement will be reviewed no later than twenty-four months after the entry into force of the trade agreement. Britain signs free trade agreements with South Korea after Brexit See the list of minimum operations in Article 6 of the Protocol on Rules of Origin in the text of the UK-South Korea trade agreement. Nevertheless, the free trade agreement between Britain and Korea is a very welcome development. It has removed some uncertainties about a no-deal Brexit and offers British and Korean businesses a modicum of stability in a highly volatile environment.