Prime Minister Keir Starmer announced on the evening of March 1 that Britain has authorised the United States to make limited use of UK military bases for specific defensive purposes. He said the move responds to requests from Gulf states for bolstered defence and follows British fighter jets being deployed to the region, where they intercepted an attack attributed to Iran. The prime minister was careful to stress that the UK did not take part in any strikes on Iranian territory.
That statement came alongside a joint declaration from the leaders of the United Kingdom, France and Germany warning that they might take “necessary and proportionate defensive action” to eliminate Iran’s capacity to launch missiles and drones. The trilateral language signals a rare alignment among major European powers on a kinetic response option, and underscores growing alarm in capitals over Iran’s expanding missile and unmanned aerial capabilities.
The announcement should be read against a backdrop of repeated incidents in the Gulf over the past months that Western and Gulf governments have blamed on Tehran or its proxies. Those attacks — including strikes on shipping and on military targets — have prompted regional partners to press Washington and its allies for more robust deterrence. Hosting US operations, even on a constrained basis, is a tangible way for London to signal support to Gulf states and to the United States without directly escalating into offensive operations.
Politically, the restraint in Starmer’s wording is deliberate. By framing the permission as “specific and limited” and emphasising non-participation in strikes, the government seeks to reassure a domestic audience wary of open-ended military entanglement while maintaining credibility with allies. For European partners, the joint UK–France–Germany statement reflects a desire to be seen as operationally relevant in a crisis that has significant implications for energy flows and regional stability.
Risks remain. Allowing allied forces to use British bases increases the UK’s logistical and political exposure and narrows the margin between deterrence and escalation. The coming days are likely to see stepped-up patrols, enhanced intelligence-sharing and renewed diplomatic efforts to prevent further strikes, alongside closer scrutiny in Westminster over how far the government is prepared to let British facilities be used in a confrontation with Iran.