UK customs and trade news: May 2026

News in brief: fuel duty rates amended; new versions of the UK's preferential tariffs and other reference documents published; tariff notices concerning classification of sourdough (liquid) and articles for Christmas festivities issued; TRA Plan 2026–2029 published; countervailing duty on rainbow trout updated; reclaiming duty payments on goods brought into Northern Ireland under the Duty Reimbursement Scheme updated; UK-Gulf Cooperation Council Free Trade Agreement concluded; start of application of NCTS6 and eATA on 1 June 2026 announced; and other updates.