Regulation 2 amends Schedule 1 to the Customs Tariff (Preferential Trade Arrangements) (EU Exit) Regulations 2020 (S.I. 2020/1457) to give effect to an updated version of the origin reference document applicable in respect of the preferential trade arrangement with the Republic of Korea. The origin reference document is updated to give effect to an amendment to that preferential trade agreement concerning the extension of provisions on cumulation of origin and direct transport in respect of the European Union. The amendment was agreed between the United Kingdom and the Republic of Korea by exchange of notes on 24th October 2025.