Decision No 1/2026 of the Specialised Committee on Participation in Union Programmes established by Article 8(1), point (s), of the Trade and Cooperation Agreement between the European Union and the European Atomic Energy Community, of the one part, and the United Kingdom of Great Britain and Northern Ireland, of the other part, of 15 April 2026 amending Protocol I to the Trade and Cooperation Agreement [2026/1962]