Interesting @GentleSheep thank you.
The relevant part that relates to the IRGC:
There have been ongoing calls for the proscription of the Islamic Revolutionary Guard Corps (IRGC) in recent years during both the current and previous Parliament.
The IRGC is an Iranian state military and intelligence service, introduced following the 1979 revolution as a counterweight to Iran’s regular armed forces. Its external arm is proscribed by the US as a terrorist organisation.
The IRGC has been linked to kidnap and assassination plots in the UK. In March 2025 the Security Minister, Dan Jarvis, said that since the start of 2022, the UK had responded to 20 Iran-backed plots presenting potentially lethal threats to British citizens and UK residents.
In January 2023, the Commons debated, and agreed to, a motion on Iran which included a request for the government to proscribe the IRGC. In April 2023 and November 2023 a cross-party group of MPs and members of the House of Lords also wrote to the government urging proscription.
In January 2023 Jonathan Hall KC, the independent reviewer of terrorism legislation, advised that proscribing the IRGC, as a state entity of Iran, under the Terrorism Act would be “at the risk of upsetting the settled meaning of terrorism in domestic law” which had, to date, excluded the armed forces of nation-states.
In September 2023, the UK’s Commissioner for Countering Extremism, Robin Simcox, said it was in the “national interest” to proscribe the IRGC as it supports proscribed groups around the world, and that it was “unsustainable” for it to remain legal for the IRGC to be hosted in UK institutions.
In his statement on Iran state threats in March 2025, Dan Jarvis said that it had become increasingly clear that “there are challenges inherent in applying our existing counter-terror legislation to state and state-linked threats to our national security”. He announced that he had therefore asked Jonathan Hall KC to review parts of the counter-terrorism framework that could be applied to modern-day state threats, such as those from Iran. This included giving specific consideration to a mechanism for proscribing state and state-linked bodies. He noted that as reviewer of both state threats and terrorism legislation Jonathan Hall was perfectly placed to undertake the review.
Jonathan Hall published his report on State Threats and Terrorism on 19 May 2025. He concluded that, as a matter of statutory interpretation, the proscription power provided for by the Terrorism Act 2000 could not be applied to state entities. As a result he recommended that the Secretary of State should have the power to issue a Statutory Alert and Liability Threat notice (SALT Notice). He made no observations as to whether such a power should be exercised against the IRGC.