The decision has triggered tensions with the United States, where Donald Trump warned that access to key bases could be critical to counter Iran, deepening a growing strategic divide.
BY PC Bureau
February 20, 2026: The UK government has declined a request from the United States to use British air bases for possible military strikes on Iran, according to a report by the BBC. The decision comes amid increasing concerns over a potential conflict as the US strengthens its military presence near Iran.
Prime Minister Keir Starmer’s government reportedly refused to authorise American long-range bombing missions from RAF Fairford in southern England, citing concerns that pre-emptive strikes could violate international law.
The move risks further straining relations between London and Washington, which are already under pressure over Britain’s plan to transfer sovereignty of the Chagos Islands to Mauritius. The archipelago hosts the strategically important US-UK military base on Diego Garcia, a key hub for long-range operations across the Middle East.
US President Donald Trump criticised Britain’s stance and warned against relinquishing control of Diego Garcia, saying the United States may require access to bases such as Diego Garcia and RAF Fairford to counter threats from what he described as a “highly unstable and dangerous regime.”
Under existing defence agreements, the US can operate from Diego Garcia with prior notification to the UK. However, any offensive operations launched directly from RAF bases require explicit approval from the British government.
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The UK government has not granted permission for the US to use British military facilities — including the pivotal Diego Garcia airbase and RAF Fairford — as launch points for… pic.twitter.com/QD4dxPI7va— GeoPulse🌍🌎 (@Geopulse24) February 19, 2026
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Britain’s reluctance reflects longstanding legal caution. Under international law principles incorporated into UK policy, a country can share responsibility for unlawful military action if it knowingly assists an ally’s offensive operations. As a result, London has historically limited its involvement in US strikes on Iran to defensive and support roles rather than direct participation.
Tensions have also intensified over Britain’s agreement to hand over sovereignty of the Chagos Islands to Mauritius while leasing back Diego Garcia for continued military use. Washington views the base as vital to its strategic operations in the Middle East and Indo-Pacific, and Trump has urged Britain not to proceed with the transfer, calling it a serious strategic mistake.
