Hiroshima Report 20184. The United Kingdom (Nuclear-Weapon State)
Points / Full Points (%)
Nuclear Disarmament |
25/101 (24.8%) |
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The size of the U.K. nuclear arsenal has decreased incrementally. The United Kingdom plans to reduce to no more than 120 operationally available warheads and a total stockpile of no more than 180 warheads by the mid-2020s. Construction of a new class of four SSBNs, as replacement for the existing Vanguard-class vessels, was commenced. It neither participated in the negotiation conference of the TPNW, nor signed the treaty. Meanwhile, the U.K. has engaged in promoting the CTBT’s entry into force, and developing its verification systems. |
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Nuclear Non-Proliferation |
39/47 (83.0%) |
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The U.K. acceded to the IAEA Additional Protocol with the provision for complementary access visits. All of its civilian nuclear material is subject to the international safeguards. A Nuclear Safeguards Bill was introduced to U.K. parliament, whose purpose is to establish a system of domestic safeguards to replace the existing EURATOM safeguards when the United Kingdom will withdraw from it. It has proactively engaged in nuclear non-proliferation, including implementation of export controls. |
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Nuclear Security |
25/41 (61.0%) |
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The U.K. is advancing the introduction of the recommendation measures of INFCIRC/225/Rev.5, mainly focuses on legislation development and cyber threat countermeasures. In addition to hosting the IAEA’s nuclear security related technical conferences, the U.K. also makes contributions such as financial commitment to the NSF. In addition, the U.K. is also focusing on multilateral cooperation in the field of nuclear security as seen in the involvement in the GINCT. |