Decision No 1/2021 of the Specialised Committee established by Article 8(1)(r) 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 28 September 2021 as regards the extension of the period referred to in Article 540(3) during which DNA profiles and dactyloscopic data can be exchanged with the United Kingdom [2021/1946]