What’s happened: The British Parliament’s Intelligence and Security Committee (ISC) published its long awaited report on Iran and the threats it poses to UK national security.
- One of its key findings is that the threat posed by Iran is major, and now equal to that of Russia.
- Its contents primarily take the form of declassified intelligence and interviews with senior officials from MI6, MI5, GCHQ, the Cabinet Office, and Home Office.
- According to the report, Tehran strategic priorities include:
- Reducing British military presence in the Middle East.
- Undermining its relationship and alliance with the US and Israel.
- Suppressing criticism of the Islamic Republic, especially among UK-based dissident exiles and journalists. An increased threat to Jewish and Israeli interests is also noted.
- One key finding is that Iran views the UK as one of its most significant adversaries, only behind the US, Israel, and Saudi Arabia. The report also found that the threat of assassination and violence by Iran and its proxies had reached the same level as Russia, and is accompanied by a “significant espionage threat” involving multiple intelligence agencies, including the Ministry of Intelligence and Security (MOIS), IRGC Intelligence Organisation, and IRGC Quds Force. According to the report, both the MOIS and various arms of the IRGC “pose a significant threat to UK national security.”
- While describing the Iranian threat as “more narrowly focused and opportunistic than the more strategic, all-encompassing and well resourced threats from Russia and China,” the report emphasised that “it should not be underestimated given its persistence” highlighting its “ferociously well resourced” intelligence services and “a high appetite for risk when conducting offensive activity, which means it poses a dynamic and erratic threat.”
- The following areas were also identified as specific threat elements against the UK and its interests:
- Physical attacks, i.e. “assassination as an instrument of state policy – targeting dissidents is a high priority for both the Ministry of Intelligence and Security (MOIS) and the IRGC”.
- Irans’ nuclear weapons programme.
- Espionage – utilising cyber capabilities and human agents. Iran’s cyber threat is described as manifesting itself “acutely”, being significantly easier to deploy than human agents given a difficult operating environment.
- Offensive cyber operations, such as attacks on critical national infrastructure.
- Political interference activity.
Context: Iran has long been understood to pose a major threat to the UK’s national security, but this report is the first time intelligence about its activities and operations has been declassified and made public.
- In September 2024, GCHQ issued a joint statement with the FBI and US Treasury warning of “the ongoing threat from spear-phishing attacks carried out by cyber actors working on behalf of the Iranian government”, with targeting prioritising “individuals with a nexus to Iranian and Middle Eastern affairs, such as current and former senior government officials, senior think tank personnel, journalists, activists and lobbyists.”
- In October 2024, MI5’s Director General, Ken McCallum, disclosed that the service had “responded to twenty Iran-backed plots presenting potentially lethal threats to British citizens and UK residents”. These plots are understood to have primarily targeted prominent dissident activists, journalists, Israelis, and members of the Jewish community.
- In November 2024, a former British Army soldier, Daniel Khalife, was found guilty of having spied for Iran and sentenced to over 14 years in prison for espionage and terrorism offences, including breaches of the Official Secrets Act and eliciting or attempted to elicit information of a kind likely to be useful to a person committing or preparing an act of terrorism.
- In May 2025, three Iranian men were charged with assisting a foreign intelligence service under the National Security Act following their arrest on suspicion of plotting an attack on the Israeli Embassy in London. Their plea hearing has been scheduled for September 26, and in the event they plead not guilty their trial will take place in October 2026.
- Iran International, the dissident TV channel, has faced a significant number of attempted attacks by the regime in Tehran. In February 2023, it was forced to temporarily relocated to Washington, DC, due to credible and increased threats. In December of the same year, Magomed-Husejn Dovtaev was found guilty of one charge of attempting to collect information useful for terrorism after surveilling the station’s West London premises.
- This report marks the culmination of years of research and testimony. While it finished taking evidence in August 2023 and therefore did not respond to the Iranian threat post-7th October, the ISC advised that its findings are still relevant despite a changed and changing regional landscape.
Looking ahead: While the ISC welcomed and praised some of the British government’s recent policy measures against Iran, it was nevertheless critical of the overall approach taken, which it said “suffered from a focus on crisis management and has been primarily driven by concerns over Iran’s nuclear programme – to the exclusion of other issues” and that “fire-fighting has prevented the Government from developing a real understanding of Iran, with a lack of Iran-specific expertise across Government”.
- From 1 October, enforcement of the Foreign Influence Registration Scheme (FIRS) will begin, with individuals acting under Iran’s direction required to register or face up to five years in prison. The Home Office launched the scheme on 1 July, with a three-month grace period for compliance.
- The Government is expected to introduce new legislation to close the legal gap preventing the proscription of the IRGC, as confirmed earlier this week by the Minister for the Middle East, Hamish Falconer. However, details of the proposed solution and its timeline remain unclear.
- Powers to ban state-backed groups that threaten UK national security – outside the framework of existing counter-terror laws – are expected to be developed, after the Home Secretary committed in May to drafting new legislation to that effect.
- According to the Guardian, “the report will feed into the full government response to the review conducted by Jonathan Hall KC, the independent reviewer of terrorism legislation, into a new proscription mechanism surrounding state-sponsored terrorism.”


