Home2020 Treaties and Agreements ...United Kingdom (20-1231) – Agreement for Cooperation in Peaceful Uses of Nuclear Energy hide United Kingdom (20-1231) – Agreement for Cooperation in Peaceful Uses of Nuclear Energy TIAS Office of Treaty Affairs December 31, 2020 Nuclear Energy: Civil Uses Signed at Washington May 4, 2018; entered into force December 31, 2020. Download Agreement [2 MB] Tags Nuclear Energy Peaceful Uses Treaties United Kingdom