The United Kingdom cooperates fully with the IAEA. It continues to support the IAEA’s safeguards implementation through the UK Safeguards Support Programme that provides training for IAEA inspectors, analysis of environmental samples and the provision of non-English open sources of information that could reveal indications of undeclared nuclear activities. The UK supports the resolution of safeguards non-compliance through its role on the IAEA Board of Governors, working to ensure states are fulfilling their safeguards obligations.
At the IAEA Board of Governors in September 2023, the UK, alongside France, Germany and the United States, delivered a joint statement calling on Iran to provide technically credible explanations in response to the IAEA’s outstanding safeguards questions, noting that Iran had failed to implement commitments made in its March 2023 Joint Statement with the IAEA and that the Board would need to be prepared to take further action if Iran continued to fail to meet its legal obligations.
In November 2024, the UK, France, Germany and the United States jointly proposed a resolution to the IAEA Board of Governors requesting the Director General to produce a comprehensive and updated assessment of Iran’s cooperation with the IAEA, noting that Iran had failed to provide technically credible information needed to resolve outstanding safeguards issues for nearly five years.
In June 2025, the UK, France, Germany and the United States brought forward a resolution to the IAEA Board of Governors finding Iran in non-compliance with its obligations under its Comprehensive Safeguards Agreement, in the context of Article XII.C of the IAEA Statute, following Iran’s ongoing failure to cooperate with the Agency over six years.
In November 2025, the UK, France, Germany and the United States tabled a further resolution at the IAEA Board of Governors to clarify the IAEA’s reporting mandate on Iran’s compliance with the nuclear elements of the reinstated UN Security Council resolutions, recalling Iran’s ongoing non-compliance with its legal obligations under its NPT Safeguards Agreement.
In March 2026, the UK, alongside France and Germany, delivered a joint statement to the IAEA Board expressing deep concern that the IAEA had been unable to access several of Iran’s nuclear facilities for more than eight months following the military interventions in June 2025, and affirming that cooperation between the Agency and Iran cannot be made conditional on factors outside legal obligations under the NPT.