British Prime Minister Andy Burnham told broadcasters on Wednesday that there are "strong indications" Iran was involved in the suspicious activity that triggered a major security operation at RAF Fairford, a base in southwest England used by the United States military. It is the first time a UK official has publicly linked Tehran to the incident.
"There are strong indications that Iran played a part in what happened over the weekend at RAF Fairford," Burnham told the BBC, adding that the matter remains "an ongoing, complex, and serious police investigation." Speaking later to Sky News, he said: "We have been waiting to confirm what we could say, but we can now confirm our belief that Iran played a part."
Officials have not described the precise nature of the threat. Iran's embassy in London had already issued a statement "categorically" rejecting and condemning any suggestion of involvement.
What happened at Fairford
The alert began in the early hours of Sunday, when three white vans were seen apparently heading towards the airbase. A local resident who contacted police reported seeing a group of masked men near the vehicles, which were blocking a road in a village adjoining the base.
Police arrested five British men on Sunday on suspicion of explosives and terrorism offences. All five were subsequently released on bail. After three days of investigation, which included the deployment of a bomb disposal team, officers said on Tuesday that no explosives had been found in the vehicles, though they had recovered "a quantity of petrol."
The base has been used by US forces in operations against Iran, which helps explain the sensitivity of the episode. US President Donald Trump and Secretary of State Marco Rubio had earlier suggested that intelligence services were aware of the suspects and that a foreign state could be behind the plot. Rubio's remarks, reported as linking the plot to a foreign actor, preceded Burnham's comments. UK police have been pursuing a possible Iranian connection, as covered in our report on the probe into the Fairford bomb plot.
A wider pattern of cross-border threats
The allegation lands in a period of heightened European attention to state-linked security incidents, from sabotage and espionage to drone incursions. The Baku security forum has put cross-border threats high on its agenda this week, reflecting a broader push among European and neighbouring governments to coordinate responses.
For London, the Fairford episode also intersects with a crowded diplomatic calendar. Burnham has been weighing options for the UK's future relationship with the EU, and is expected to present EU relationship options before an autumn summit. A confirmed Iranian role in a plot on British soil would sharpen the security dimension of those discussions, particularly on intelligence sharing and counter-terrorism cooperation with European partners.
Tehran's denial is unlikely to close the matter. British investigators have not yet said whether they believe the five released men acted on instructions from abroad, nor whether the petrol was intended for an attack rather than, for example, arson or disruption. The absence of explosives has complicated the public narrative even as the political stakes have risen.
What is clear is that the weekend's events have moved from a local bomb scare to a question of state responsibility. Burnham's language — carefully hedged with "indications" rather than proof — leaves room for the investigation to evolve. But by naming Iran publicly, the UK prime minister has signalled that London now treats the Fairford incident as more than a domestic criminal matter.
Further details are expected as police continue their inquiries and as the government weighs how much of its intelligence assessment it can disclose without compromising sources. For now, the five suspects remain on bail, no charges have been brought, and Tehran continues to reject any role.
