Suspected plot at U.S.-run air base almost certainly directed by Iran, UK prime minister says

The suspected plot was an alleged plan to attack RAF Fairford in Gloucestershire, England. The base has been used by American bombers during the ongoing war with Iran. British Prime Minister Andy Burnham said the operation was almost certainly directed by Iran’s Revolutionary Guard. Iran denied involvement.

Police arrested five men at the scene on Sept. 27 and later arrested two more. Residents nearby were evacuated while armed officers and army bomb-disposal experts searched the area. Police said they found gasoline, described as an accelerant, in three vans connected to the first five suspects.

They found no explosives. All seven suspects are in their 20s, and all were released on bail. Six are British nationals, while one is a dual U.K.-Iranian citizen. The investigation remains open, but no suspect had been charged when the report was published.

Iran’s Islamic Revolutionary Guard is a major Iranian military and security organization. In this case, British officials identified its alleged role because they assessed that the suspected operation was coordinated inside Iran. Prime Minister Andy Burnham said it was almost certainly directed by the Guard. Iran rejected that accusation.

The suspected target was RAF Fairford, a base used by American bombers to strike Iran. Britain therefore treated the alleged operation as more than an ordinary criminal case. It was viewed as possible state-directed activity on British soil. Police arrested seven men, but no one had been charged.

Britain summoned Iran’s ambassador and added two Iranians to its sanctions list. One was identified as the head of counterespionage operations in the Revolutionary Guard. The case could deepen tension between Britain and Iran, while investigators still need to establish evidence that can support prosecutions.

The investigation involved seven arrests. Police first detained five men at RAF Fairford on Sept. 27, then arrested two more. All the suspects are in their 20s. Six are British nationals, and one is a dual U.K.-Iranian citizen.

Police said they found gasoline, an accelerant, in three vans linked to the first five suspects. They did not find explosives. The discovery led to evacuations, an armed police response, and searches by army bomb-disposal experts. These details describe the physical evidence reported so far, not a completed criminal case.

All seven suspects were released on bail. No one had been charged when the report was published. The investigation therefore remained at an early and unresolved stage. Authorities also pursued the wider alleged connection to Iran, while Iran denied involvement and Britain imposed sanctions on two Iranians.

RAF Fairford is strategically important because it has been used by American bombers. The United States used the base for operations in the ongoing war with Iran. Britain allowed that use for what it called defensive strikes against Iranian missiles and launch sites after attacks on U.K. interests and allies in the Gulf.

Its role made the base a visible link between U.S. military power and Britain’s support. It also made the site relevant to Iran, which has said any base used to attack its territory is a legitimate target. The alleged plot therefore focused on a facility with direct military significance.

The U.S. withdrew its bombers from Fairford the week before the report and redeployed them to home bases. The Pentagon said this happened after the base faced Iranian threats. The incident shows how overseas bases can become pressure points during a wider conflict.

When a country is accused of directing covert attacks abroad, the targeted government may respond through law enforcement, sanctions, diplomacy, and security measures. It may also seek cooperation from allies. Such accusations matter because they suggest a foreign government is using secret networks to threaten people or military facilities inside another country.

Britain summoned Iran’s ambassador after the Fairford investigation. The ambassador denied Tehran’s involvement and asked Britain to provide evidence. Britain also sanctioned two Iranians, including the Revolutionary Guard’s head of counterespionage operations, over alleged espionage and attacks in Europe and the United States.

The United Kingdom, United States, and about two dozen Western countries jointly condemned Iranian attacks. They promised to identify, investigate, disrupt, and prosecute hostile activity. In the immediate case, however, no suspect had been charged. Further consequences would depend on evidence and legal findings.

A proxy is a person or group that carries out activity for another actor. A government may use proxies, criminal networks, or recruited volunteers instead of openly deploying its own personnel. This can make an operation harder to trace and can help the government deny direct responsibility.

Britain’s Home Secretary Shabana Mahmood said states such as Iran use proxies in Britain. She said they may pay criminals or exploit naive volunteers to attack the country and its citizens. The alleged Fairford plot illustrates the concern: seven local suspects were arrested, while British officials assessed that the operation was coordinated in Iran.

This arrangement creates two investigations at once. Authorities must determine what the local suspects did and whether a foreign government directed them. Britain said national-security cases involving hostile states rose 50% in the six months to December 2025. The government promised to identify, disrupt, and prosecute such activity.

State sovereignty means each country generally controls its own territory and government. Under the United Nations Charter framework, states normally must not use force against another state. Force may be justified in limited circumstances, such as self-defense after an armed attack, or with authorization from the U.N. Security Council. Any response must be necessary and proportionate.

A suspected proxy operation creates a difficult legal question. A country may investigate, arrest suspects, protect its territory, and pursue diplomatic or economic measures. Using force against the foreign state requires a stronger legal basis than simply alleging that individuals received support there. Evidence about direction, control, and the seriousness of the threat matters.

The article reports accusations, denials, arrests, and sanctions, not a confirmed legal finding. Britain said the Fairford incident showed hostile activity through covert networks. Iran denied involvement. The immediate response described was investigation, diplomacy, sanctions, and military redeployment rather than a reported attack on Iran.