The United Kingdom is pushing back against a key US demand over military planning tied to heightened tensions with Iran. British officials have refused to automatically grant access to UK military bases, including the strategically critical Diego Garcia and other sites, for potential strikes on Iran by US forces, sources report today.
This move has become a flashpoint between London and Washington as the Biden administration considers its options in responding to Tehran’s nuclear programme breakdown without triggering a wider conflict. The disagreement is also linked to broader diplomatic friction, including an ongoing dispute over the handover of the Chagos Islands, where the joint UK-US base at Diego Garcia is located.
Bases remain under UK control, access not guaranteed
President Donald Trump has repeatedly urged Prime Minister Keir Starmer’s government to maintain full UK control of strategic bases like Diego Garcia and RAF Fairford, arguing they could be essential if the United States decides to take military action against Iran in future. Trump has called handing over these assets or limiting access “a big mistake” amid the current standoff with Tehran.
British leaders, however, have made it clear that any use of UK territory for military operations must comply with domestic and international law. This hesitancy reflects concerns in London about being drawn into a wider war without solid legal justification, especially given the explosive nature of the Iran issue.
The controversy is tied closely to the Chagos Islands sovereignty deal. Under a 2025 agreement, the UK plans to return the islands, including the location of the Diego Garcia base, to Mauritius while keeping the base operational under a long-term lease. Trump has criticised this plan, warning it could jeopardise military cooperation and future access if conflict with Iran escalates.
The UK is insisting it will protect its legal position and national interests, and has not simply opened its bases to US operational use. This has introduced tension with Washington as both sides navigate rising unrest in the Middle East and debate how best to approach Iran’s nuclear programme without sparking wider conflict.
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