UK Arrests Four Over Suspected Iranian Surveillance of London Jewish Community
Counter Terror Policing detains one Iranian national and three British-Iranian dual citizens in dawn raids, marking latest escalation in Iran's operations on British soil.
British counter-terrorism police arrested four individuals on Friday morning on suspicion of conducting surveillance for Iran’s intelligence services, targeting locations and people connected to London’s Jewish community.
Detectives from Counter Terrorism Policing London arrested one Iranian national and three British-Iranian dual nationals shortly after 01:00 at addresses in Barnet and Watford in a pre-planned operation. The investigation relates to suspected surveillance of locations and individuals linked to the Jewish community in the London area, according to a Metropolitan Police statement. Six additional men were arrested at a Harrow address on suspicion of assisting an offender.
The arrests come amid an unprecedented surge in Iranian Intelligence operations targeting the UK. MI5 Director General Sir Ken McCallum reported in October 2025 that security agencies have tracked “more than 20 potentially lethal Iran-backed plots” in the previous year. Britain placed Iran on the enhanced tier of its Foreign Influence Registration Scheme in March 2025, requiring anyone working for the Iranian state to register or face five years in prison.
Pattern of Escalating Operations
The March 6 arrests represent the latest in a sequence of Iranian Espionage disruptions that have accelerated over the past year. In May 2025, Counter Terrorism Police arrested eight men—five on suspicion of preparing a terrorist act and three under the National Security Act—all Iranian nationals except one individual whose nationality was being established, according to UK government records.
Three of those arrested—Mostafa Sepahvand, 39, Farhad Javadi Manesh, 44, and Shapoor Qalehali Khani Noori, 55—were charged with engaging in conduct likely to assist a foreign intelligence service between August 2024 and February 2025. During initial court proceedings, prosecutors alleged the three men had targeted Britain-based journalists connected with Iran International, a broadcaster critical of the Iranian government, reported Radio Free Europe.
Last year, MI5 Director Ken McCallum said state threats investigations had increased by 48% in the previous 12 months, adding that since January 2022, police and MI5 had responded to 20 Iran-backed plots presenting potentially lethal threats, according to parliamentary testimony.
Dual Nationals in the Crosshairs
The involvement of British-Iranian dual nationals in Friday’s arrests underscores a critical vulnerability in Iran’s asymmetric operations against the West. Detention remains the primary physical threat to British citizens in Iran and is heightened in relation to dual nationals—particularly because dual nationality is not recognised by Iran, according to a UK government intelligence assessment.
Research published in 2022 suggests at least 66 foreign and dual nationals have been detained by Iran since 2010, with 15 having links to the UK, reported the House of Commons Library. The NGO Human Rights Watch has argued that since 2014 there has been a growing practice of “politically motivated arrests” against dual nationals in Iran, while the UN Working Group on Arbitrary Detention has ruled that many dual nationals have been arbitrarily detained.
The pattern extends beyond detention to recruitment. Since 1979, when the Islamic Republic was established, Iran has targeted dissidents, dual nationals and Israelis overseas, according to parliamentary research. British intelligence chief Ken McCallum said: “Iranian state actors make extensive use of criminals as proxies—from international drug traffickers to low-level crooks”, reported Iran International.
The Hostage Diplomacy Dimension
Friday’s arrests occur against the backdrop of deteriorating UK-Iran relations, exacerbated by Tehran’s continued imprisonment of British nationals. On February 19, 2026, Iran’s Revolutionary Court sentenced British couple Craig and Lindsay Foreman to 10 years in prison for espionage, after they were arrested in January 2025 while traveling through Iran on a motorcycle journey, according to court records.
Foreign Secretary Yvette Cooper called the sentence “completely appalling and totally unjustifiable”, adding that the Foreign Office would “pursue this case relentlessly with the Iranian government”. Iran has detained foreign nationals on security-related charges on many occasions, a practice known as “hostage diplomacy”, with detainees used as leverage in international relations, according to advocacy groups.
“Their arrest showed the West had failed to come up with a viable policy to counter Iran’s hostage-taking practice.”
— Ana Diamond, founder of Hostagesses Alliance
Relations between Tehran and London have worsened in recent months after the British couple was charged with espionage in February, with the British government advising citizens against all travel to Iran citing “significant risk” of arrest, questioning, or detention, reported Radio Free Europe.
International Response Intensifies
In July 2025, the United States, United Kingdom, France and 11 other allied nations issued a joint statement condemning what they described as a surge in Iranian intelligence operations targeting individuals in Europe and North America, stating: “We are united in our opposition to the attempts of Iranian intelligence services to kill, kidnap, and harass people in Europe and North America in clear violation of our sovereignty”, according to a UK government statement.
The government introduced a new sanctions regime against Iran in 2023, with sanctions measures including asset freezes, travel bans and director bans—as of December 2025, 547 individuals and entities had been sanctioned under the regime, including IRGC members and criminal networks such as Foxtrot, according to parliamentary data.
- Four individuals arrested in London area for suspected surveillance targeting Jewish community on behalf of Iranian intelligence
- Arrests mark continuation of accelerating Iranian operations on UK soil, with 20+ potentially lethal plots disrupted since 2022
- British-Iranian dual nationals feature prominently in both recruitment as operatives and detention as leverage in hostage diplomacy
- UK has placed Iran on enhanced Foreign Influence Registration tier, requiring registration or facing criminal prosecution
- International coalition of 14 nations formally condemned Iranian transnational repression operations in July 2025
What to Watch
Whether charges are filed under the National Security Act 2023 will signal the strength of evidence against the four primary suspects. The legislation, which came into force in 2023, provides enhanced powers to prosecute state threats and marks the first significant update to UK espionage law in decades.
The trial of Sepahvand, Manesh, and Noori—scheduled for October 2026 at Woolwich Crown Court—will provide unprecedented public insight into Iranian intelligence tradecraft and targeting methodologies on British soil. Their cases represent the first Iranians charged under the National Security Act.
Broader strategic questions remain unresolved: whether the UK will proscribe the Islamic Revolutionary Guard Corps as a terrorist organization, as repeatedly urged by parliamentarians; whether enhanced immigration enforcement can effectively screen Iranian intelligence operatives entering via irregular migration routes; and whether Western nations can develop a unified deterrent against state-sponsored hostage-taking that goes beyond reactive sanctions.
The intersection of Iranian espionage operations in the West and Western nationals detained in Iran creates a bilateral standoff with no clear resolution mechanism. Tehran shows no indication of curtailing external operations despite diplomatic costs, while London faces pressure to demonstrate that enhanced legal frameworks translate into genuine strategic deterrence.