Prime Minister Andy Burnham told the House of Commons on Monday that a security incident near RAF Fairford in Gloucestershire was “almost certainly” directed by Iran’s Islamic Revolutionary Guard Corps, as the United Kingdom issued fresh sanctions and joined 28 other governments in a joint condemnation of Tehran’s hybrid activity on allied soil.

From Gloucestershire cordon to coordinated diplomacy

Police opened a major operation in the early hours of 27 September after officers stopped three suspicious vehicles near the base, which has hosted U.S. bombers during the Middle East conflict. Five British men in their 20s were arrested on suspected terrorism and explosives offences; police later said petrol was found in the vans but no explosives. They were released on stringent bail. Counter Terrorism Policing subsequently rearrested a 22-year-old British national on a terrorism offence linked to the incident, and a 25-year-old British-Iranian man was detained in London earlier in the month.

Burnham said the government would “crack down on Iran’s use of criminal networks” and bring further sanctions to restrict Tehran’s capacity to operate in Britain. Foreign Secretary Ed Miliband announced asset freezes against two Iranian nationals for facilitating or engaging in hostile activity on behalf of the regime, without naming them publicly. Miliband also summoned Iran’s ambassador, Seyed Ali Mousavi, to stress that Britain would not tolerate threats on UK territory.

Tehran’s denial and Washington’s bombers

Iran’s embassy said Mousavi “categorically rejected” any Iranian role when he met Middle East minister Stephen Doughty, and state media reported Tehran was willing to cooperate with the British investigation. Tehran has previously called the allegations unfounded and accused London of fuelling “Iranophobia.”

The diplomatic escalation follows the U.S. decision to withdraw B-52 and B-1 bombers from Fairford amid fears of a complex drone attack on the facility, according to U.S. officials cited by multiple news outlets. Burnham confirmed in his Commons statement that Britain had already flown a Voyager tanker on 14 refuelling missions in support of Saudi air defences, underlining how the Fairford scare sits inside a wider regional war that began in late February.

What Westminster watches next

Home Secretary Shabana Mahmood is expected to update MPs with more operational detail as Gloucestershire police continue inquiries under counter-terrorism command. The joint statement gives Downing Street a multilateral platform if further IRGC-linked plots are alleged, but it also raises the stakes for any evidence presented in court against suspects still on bail. For residents who endured evacuations in the village of Whelford, Monday’s rhetoric is only the political half of a story that still lacks a full public accounting of what the vans near Fairford were meant to do—and who ordered them there.