# Iran designates MI6 a hostile group and lists Britain's navy and air force as terrorist organizations

Tehran calls the step reciprocal for Britain's July designation of the Revolutionary Guards under its state-threats law. Japan and Saudi Arabia have agreed to work together on restoring shipping through Hormuz.

- Published: 2026-11-01T05:14:26.029Z
- Canonical: https://polylog.news/2026-11-01/iran-designates-mi6-a-hostile-group-and-lists-britain-s-navy
- Publisher: Polylog (Global desk)
- Section: geopolitics
- Sources: [IRNA (Farsi)](https://www.irna.ir/news/86308724/%D8%A7%D9%82%D8%AF%D8%A7%D9%85-%D9%85%D8%AA%D9%82%D8%A7%D8%A8%D9%84-%D8%A7%DB%8C%D8%B1%D8%A7%D9%86-MI6-%DA%AF%D8%B1%D9%88%D9%87-%D9%85%D8%AA%D8%AE%D8%A7%D8%B5%D9%85-%D9%88-%D9%86%DB%8C%D8%B1%D9%88%DB%8C-%D8%AF%D8%B1%DB%8C%D8%A7%DB%8C%DB%8C-%D9%88-%D9%87%D9%88%D8%A7%DB%8C%DB%8C-%D8%A7%D9%86%DA%AF%D9%84%DB%8C%D8%B3), [Jiji Press](https://www.jiji.com/jc/article?k=2026110100199&g=pol)

Iran's foreign ministry announced countermeasures against British intelligence and military bodies, Iran's state news agency [IRNA reported in Persian](https://www.irna.ir/news/86308724/%D8%A7%D9%82%D8%AF%D8%A7%D9%85-%D9%85%D8%AA%D9%82%D8%A7%D8%A8%D9%84-%D8%A7%DB%8C%D8%B1%D8%A7%D9%86-MI6-%DA%AF%D8%B1%D9%88%D9%87-%D9%85%D8%AA%D8%AE%D8%A7%D8%B5%D9%85-%D9%88-%D9%86%DB%8C%D8%B1%D9%88%DB%8C-%D8%AF%D8%B1%DB%8C%D8%A7%DB%8C%DB%8C-%D9%88-%D9%87%D9%88%D8%A7%DB%8C%DB%8C-%D8%A7%D9%86%DA%AF%D9%84%DB%8C%D8%B3) on Sunday. The ministry designated the Secret Intelligence Service (MI6) a "hostile group" and the Royal Navy and Royal Air Force "terrorist organizations." The ministry said it acted in response to what it called Britain's hostile actions. These include Britain's participation in what IRNA called the "American-Zionist war against Iran" and Britain's decision to place the Islamic Revolutionary Guard Corps (IRGC) under its state-threats law.

Britain made that decision in mid-July. It used [new "proscription-like" powers](https://www.aljazeera.com/news/2026/7/13/uk-to-list-irans-irgc-as-terror-threat) to designate the IRGC as a threat to national security. At the time, Iran said it reserved [the right to reciprocate](https://www.iranintl.com/en/202607144485). London has accused the IRGC of plots on British soil. In October it blamed the force for [an incident at an airbase](https://www.aljazeera.com/news/2026/10/13/iran-sees-false-flag-operations-after-uk-blames-irgc-for-airbase-incident), which Tehran called a "false flag" operation. Iran has used the same reciprocity law before, designating the [navies and air forces of European Union states](https://thenewregion.com/posts/4646/iran-designates-eu-navy-air-forces-as-terrorist-organizations) in February after the EU listed the IRGC.

Gulf shipping is the immediate practical concern. Japan's [Jiji Press reported](https://www.jiji.com/jc/article?k=2026110100199&g=pol) that the Japanese and Saudi foreign ministers met and agreed to cooperate on restoring navigation through the Strait of Hormuz. Japan imports most of its crude from the Gulf, and Saudi Arabia is now under Houthi attack. Iran has said it will not reopen the strait until Washington accepts its terms.

## What this means

The designation gives Iranian forces a domestic legal basis to treat British warships and aircraft in the Gulf as hostile, and possibly to detain British-linked vessels or crews. British naval escorts are part of the effort to protect shipping. The main exposure is through shipping insurance and crew risk for British-flagged and British-managed vessels, more than through any direct clash. The EU and Canadian precedents show these designations mainly serve as legal and diplomatic signals and rarely lead to immediate action. Their effect depends on whether Tehran wants to raise the cost of a particular state's involvement. The new element is that the target is a navy that operates near Hormuz while the strait is restricted. The likelier outcome in the coming weeks is higher war-risk insurance costs for British-linked ships and closer British coordination with US and Gulf naval forces, without a direct confrontation, as long as the Qatar talks continue. If talks collapse and US strikes resume, the designation becomes a ready justification for Iranian action against British assets.

## What to watch

- Any Iranian move to stop or inspect a British-flagged or British-managed ship near Hormuz, which would show the designation being used.
- Britain's formal response, including whether it widens sanctions or changes its naval posture in the Gulf.
- Whether Japan or other Asian importers join a coordinated escort or mine-clearing effort to reopen Hormuz.