British counterterrorism police re-arrested two men on October 20, 2026, on suspicion of assisting Iranian intelligence services in connection with a security incident near RAF Fairford, a military airbase in Gloucestershire used by the United States Air Force. The arrests mark a significant development in an investigation that began after suspicious vehicles were discovered near the installation on September 27.
The suspects are a 24-year-old British citizen and a 25-year-old man with dual British-Iranian nationality. Both are from the London borough of Westminster and had previously been arrested on suspicion of terrorism-related offenses before being released on police bail.
Investigators detained the men under Section 3 of the National Security Act 2023, which covers conduct that materially assists a foreign intelligence service. Police identified Iran as the country involved in their investigation but have not announced criminal charges.
Police Investigate Suspected Iranian Intelligence Activity
Assistant Commissioner Laurence Taylor, head of Counter Terrorism Policing, said investigators believe Iranian state involvement in the September incident is highly likely.
He explained that detectives are still examining the extent of any foreign involvement and what those responsible may have intended to accomplish. The investigation remains active, with officers continuing to collect evidence and examine possible connections between the suspects.
The latest arrests represent a change in the suspected offenses being investigated. Earlier arrests focused on possible preparations for terrorist acts, while the October 20 detentions concern suspected assistance to a foreign intelligence service.
Under the National Security Act, prosecutors do not necessarily need to establish that a completed terrorist attack occurred. The legislation also addresses certain activities that could help foreign intelligence organizations carry out operations against British interests.
However, arrest on suspicion of an offense does not establish guilt. Police have not publicly disclosed evidence demonstrating that either man knowingly worked for Iranian intelligence.
Five other men arrested during the investigation remain on police bail. Authorities have not announced charges against any of the seven individuals associated with the incident.
Suspicious Vans Triggered September Security Alert
The investigation began during the early hours of September 27 after police received reports of suspicious activity near RAF Fairford.
Five British men in their twenties were detained near the village of Whelford, close to the military installation. Their presence in three vans raised concerns about a possible attack against the base.
Police established a security cordon and deployed armed officers to the area. Army bomb disposal specialists were also called in to examine the vehicles and determine whether they contained dangerous materials.
The operation forced residents from dozens of nearby homes. Some families were unable to return while officers investigated the vehicles and searched the surrounding area.
Initial concerns focused on the possibility that explosives had been brought near the base. However, subsequent examinations found no explosives in the vans.
Investigators instead discovered quantities of gasoline, which can be used as an accelerant. The discovery raised questions about whether the suspected activity involved a possible arson attack, sabotage or another form of disruption.
Police have not confirmed the intended use of the fuel. They have also avoided publicly identifying a specific attack plan, leaving several important aspects of the incident unresolved.
The five men arrested on September 27 were subsequently released on bail as investigators continued examining the evidence.
Additional Arrests Followed in London
The investigation expanded on October 1 when officers arrested a 25-year-old dual British-Iranian national in Westminster.
He was detained on suspicion of preparing terrorist acts under Section 5 of the Terrorism Act 2006. Police also searched two properties in the same area as part of their investigation.
The man was released on bail on October 3, with counterterrorism officials emphasizing that detectives were continuing to examine several possible explanations for the incident.
Another British man, aged 22, was arrested in Westminster on October 6 on suspicion of preparing terrorist acts. Police searched a property during that operation.
At the time, investigators said they were working to establish what had happened near RAF Fairford and whether the activity involved foreign direction.
The October 20 re-arrests concern two men who were already among those previously detained. They do not represent two additional suspects being added to the investigation.
RAF Fairford's Role in U.S. Military Operations
RAF Fairford is a Royal Air Force installation in southwestern England that frequently supports American military operations.
The base is particularly important for U.S. long-range bomber deployments in Europe. American B-1 Lancer and B-52 Stratofortress bombers have operated from the airfield during military exercises and operations.
During the 2026 conflict involving the United States and Iran, American bombers used RAF Fairford for missions against Iranian targets.
That role made the installation a sensitive location amid increased tensions between Tehran, Washington and London.
Iranian officials have previously warned that military facilities used to launch attacks against their country could be considered legitimate targets. Such statements have contributed to concern about the security of bases supporting American operations.
The suspected September incident prompted additional security precautions around RAF Fairford and brought renewed attention to the protection of British installations used by allied forces.
U.S. Bombers Withdrawn Following Incident
The United States subsequently withdrew its deployed bombers from RAF Fairford.
On October 4, the Pentagon confirmed that all American bombers stationed there had returned to their home bases in the United States.
A Pentagon spokesperson said U.S. bombers regularly operate internationally to support military readiness and operational requirements. The statement did not provide a detailed public explanation of the decision to move the aircraft.
The withdrawal followed the September security incident, although the Pentagon did not explicitly confirm that the suspected plot was the sole reason for the redeployment.
The decision attracted attention because RAF Fairford had been supporting American military activity during the conflict with Iran.
British officials maintained that security arrangements were in place to protect the installation. The government also emphasized the continuing cooperation between British and American defense authorities.
British Government Points to Possible Iranian Role
Prime Minister Andy Burnham has publicly expressed concern that the suspected activity near RAF Fairford may have been directed by Iranian authorities.
Earlier in October, he said there were strong indications of Iranian involvement. He subsequently suggested that the Islamic Revolutionary Guard Corps may have coordinated the operation.
Those statements went further than the information initially released by investigators, who had said they were examining several possibilities.
The government also announced sanctions against two Iranian officials amid broader concerns about alleged Iranian activities in the United Kingdom.
British intelligence and counterterrorism agencies have repeatedly warned about threats associated with foreign intelligence operations, including suspected attempts to intimidate dissidents and organize attacks through intermediaries.
Officials say these activities can involve people acting on behalf of foreign governments without necessarily holding formal positions within their security services.
Nevertheless, the precise relationship between the RAF Fairford suspects and any Iranian state organization remains under investigation.
Iran Rejects Allegations of Involvement
Iran has consistently denied responsibility for the September incident.
Its embassy in London rejected suggestions that Tehran was connected to the arrests, describing the accusations as unfounded and malicious.
Iranian Ambassador Ali Mousavi also rejected allegations of Iranian involvement during discussions with British officials in October. Tehran has called for evidence supporting the accusations and said it was willing to cooperate with the investigation.
The diplomatic disagreement reflects wider tensions surrounding the conflict between Iran and the United States.
British officials maintain that suspected foreign interference and threats against military installations must be investigated regardless of the broader international situation.
Iran, meanwhile, argues that accusations made without publicly disclosed evidence risk further damaging diplomatic relations.
Neither position establishes the guilt or innocence of the individuals arrested in the RAF Fairford investigation.
Investigation Continues Without Criminal Charges
The October 20 arrests place greater emphasis on the possibility that individuals near RAF Fairford were assisting a foreign intelligence organization.
Counterterrorism investigators must still establish what activities were planned, whether the suspects understood any alleged instructions and whether their actions violated British law.
Authorities have not confirmed that explosives were present, that an attack was imminent or that the suspects carried out an operation on behalf of the Iranian government.
Police have also not announced when charging decisions may be made.
The case remains significant because it involves an installation supporting American military operations during an active international conflict. It also raises questions about the security of military facilities and the methods foreign intelligence services may use to operate through intermediaries.
For now, the two men remain suspects in an ongoing national security investigation. Police say further information will be released when doing so will not compromise their inquiries.