Commission Decision (Euratom) 2020/2255 of 29 December 2020 on the conclusion, by the European Commission, and provisional application of the Agreement between the Government of the United Kingdom of Great Britain and Northern Ireland and the European Atomic Energy Community for Cooperation on the Safe and Peaceful Uses of Nuclear Energy and on the conclusion, by the European Commission, on behalf of the European Atomic Energy Community, and provisional application 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