UK sanctions Iran after IRGC threat to RAF Fairford

London – The British government will impose new UK sanctions Iran IRGC after senior officials said the Islamic Revolutionary Guard Corps was "almost certainly" behind recent threats to RAF Fairford.

The announcement follows a parliamentary briefing in early May in which Defence Secretary Andy Burnham told MPs the threat to the strategic airbase was likely orchestrated by the Iranian security force.

RAF Fairford hosts the United Kingdom’s most capable air‑lift and bomber assets, including U.S.-operated B‑52 bombers and the RAF’s heavy‑lift fleet. Any credible threat to the site raises immediate national‑security concerns.

The threat emerged in late April when unnamed sources reported a warning aimed at the Gloucestershire‑based base. The Ministry of Defence said the base remained fully operational and no disruption was recorded.

Burnham’s attribution was repeated by the Independent and the BBC, which noted that Prime Minister Rishi Sunak publicly condemned the threat and summoned the Iranian ambassador. The government has not released public evidence linking the IRGC to the threat; the claim rests on statements from Burnham and other officials.

Home Secretary Shabana Mahmood is expected to outline the sanctions package later this week. While details are still pending, officials say the measures will target Iranian individuals and entities tied to the IRGC and will restrict financial transactions that support the corps’ activities. Enforcement will be handled by the Treasury’s Office of Financial Sanctions Implementation.

If enacted, the sanctions could affect British firms with exposure to Iranian oil, construction and technology sectors, as well as companies that rely on Iranian supply chains for raw materials. Trade analysts warn secondary sanctions may deter third‑country partners from dealing with Iran, potentially curbing UK exports and investment flows. At the same time, the steps signal to NATO allies that Britain is prepared to defend critical defence infrastructure.

Local communities around RAF Fairford have seen heightened security alerts, with the base’s perimeter reinforced and additional police patrols deployed. Defence personnel have been briefed on the threat, but the Ministry of Defence stresses there is no imminent danger to civilians.

Diplomatically, the summons of the Iranian ambassador marks a sharp escalation. Tehran has not responded publicly, though the Iranian foreign ministry typically dismisses such accusations as unfounded. A formal protest or reciprocal measure from Iran could further strain bilateral relations.

Parliament is expected to scrutinise the forthcoming sanctions package, and security officials are likely to provide a more detailed threat assessment in the coming days. Until then, the UK’s decision underscores a willingness to use economic tools to deter perceived aggression against its most vital defence assets.