UK proscribes Iran's IRGC under new security law; supporters and financiers to face 14 years in prison

The UK has formally designated Iran's Islamic Revolutionary Guard Corps (IRGC) under its new National Security (State Threats) Act, making it a criminal offence to support or assist the organisation. Those found guilty of backing the IRGC or receiving payments from it could face up to 14 years in prison.

The designation, which took effect on July 17, marks the first use of powers created under the National Security (State Threats) Act 2026.

Support for IRGC now a criminal offence

In a statement on Friday, the UK Home Office said the IRGC had been designated alongside the Iran-linked Islamic Movement of Companions of the Right and Russia's GRU Volunteer Corps.

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Under the new law, it is now illegal to publicly support or assist the designated organisations, including by glorifying their activities or encouraging actions deemed to threaten the safety of the United Kingdom.

Individuals who provide material assistance, financial support or receive payments from the groups can be prosecuted and, if convicted, face prison terms of up to 14 years.

Hostile acts could carry life sentences

The Home Office said those who carry out sabotage, arson or other hostile acts on behalf of designated organisations could also face prosecution under the National Security Act 2023, where offences may carry life imprisonment.

Officials stressed that the new designation differs from proscribing a group under the UK's terrorism laws. Instead, it is aimed at tackling hostile activities linked to foreign states, including espionage, political interference, intimidation, sabotage and physical attacks.

First organisations designated under new powers

The designations came into force after Parliament approved an order submitted by Home Secretary Shabana Mahmood earlier this week.

According to the government, the new framework is intended to make prosecutions easier by removing the need in some cases to prove a direct link between an individual's actions and a foreign government.

Starmer defends tougher measures

Announcing the measures, outgoing Prime Minister Keir Starmer said Britain would not become "a playground for states who want to spread fear, division and violence on our streets."

"We have already taken tough action against the Iranian regime and those linked to it, and against Russian operatives and networks targeting our country," Starmer said.

"These new powers will make it easier to prosecute and lock up anyone carrying out their dirty work here in Britain."