The United Kingdom government officially designated Iran's Islamic Revolutionary Guard Corps as a terrorist organization on July 13, 2026 [1].

This move signals a significant escalation in diplomatic and security tensions between London and Tehran. By listing the IRGC as a terrorist entity, the UK government aims to dismantle the financial and operational networks that allow the group to conduct activities within British borders.

Home Secretary Shabana Mahmood announced the designation in London, saying that the IRGC and its proxies have been linked to a series of violent plots, death threats, and intimidation on British soil [2]. The government said these activities pose a direct threat to public safety [2].

"The IRGC is a terrorist organisation that poses a serious threat to the safety of the British public," Mahmood said [1].

The designation allows the UK to implement strict legal measures against the group. Under the Terrorism Act, the government will now ban any form of support for the IRGC, making it a criminal offense to provide material, or financial assistance to the organization [2].

"We will use the new powers under the Terrorism Act to ban any support for the IRGC," Mahmood said [2].

While some reports suggested other groups were designated alongside the IRGC, official announcements focused specifically on the Iranian organization [1]. The decision follows an assessment of the group's role in orchestrating threats against individuals and interests within the UK [2].

The UK government has not specified the exact number of plots disrupted, but the designation is intended to provide security services with broader powers to intercept and prosecute those aiding the IRGC [2].

“"The IRGC is a terrorist organisation that poses a serious threat to the safety of the British public."”

The official designation of the IRGC transforms the group from a sanctioned entity into a banned terrorist organization under UK law. This shift allows British authorities to prosecute not just the group's leadership, but any individuals or organizations providing support, effectively criminalizing the IRGC's operational footprint in the UK and further isolating the Iranian government internationally.