UK Authorizes US Strikes on Iranian Missile Sites from British Bases.

British Prime Minister Keir Starmer announced on March 1, 2026, that the United Kingdom will permit the United States to use select British military bases for limited defensive strikes against Iranian missile depots and launchers. The decision follows Iranian missile and drone attacks on U.S. forces and regional partners, marking a significant expansion of UK logistical support amid escalating tensions in the Middle East.

In a March 1 video address, Prime Minister Keir Starmer confirmed that the United Kingdom will authorize the United States to use certain British military bases to conduct limited defensive strikes targeting Iranian missile depots and launch systems. The move follows U.S. and Israeli strikes on February 29 against senior Iranian officials and strategic infrastructure, which were met by Iranian missile and drone attacks on U.S. bases and partner nations across the Middle East. London emphasized it had no role in the initial offensive operations but will now facilitate actions designed to deter further attacks on allied forces and protect British nationals in the region, signaling a calibrated but consequential shift in UK operational support.
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According to British authorities, the authorization includes Royal Air Force (RAF) Fairford in Gloucestershire and the joint UK U.S. facility at Diego Garcia in the Chagos Archipelago. Diego Garcia has for decades served as a strategic hub for long range U.S. air operations, with a runway capable of accommodating heavy bombers and aerial refueling aircraft, as well as deep water port facilities. RAF Fairford is regularly configured to support temporary deployments of U.S. Air Force strategic bombers in Europe.

In the video, from approximately the third minute onward, Starmer set out the rationale in direct terms. He stated:

"The only way to stop the threat is to destroy Iranian missiles at source, in their storage depots or the launchers which are used to fire the missiles. The United States has requested permission to use British bases for that specific and limited defensive purpose. We have taken the decision to accept this request, to prevent Iran from firing missiles across the region, killing innocent civilians, putting British lives at risk, and hitting countries that have not been involved."

The operational rationale outlined by Starmer centers on neutralizing the threat “at source” by targeting storage depots and launch systems used to fire ballistic missiles and attack drones. Iran fields medium-range ballistic missiles such as the Shahab-3, with an estimated range of approximately 1,000 to 1,300 kilometers depending on payload configuration. These systems, typically mounted on mobile launchers, are capable of striking military installations and urban centers across the Gulf. Iran also deploys solid fuel missiles such as the Sejjil, with a range close to 2,000 kilometers and reduced launch preparation time, which complicates early detection.

To strike hardened infrastructure or storage sites, U.S. planners are likely to employ long-range bombers such as the B-52H Stratofortress or the B-1B Lancer. The B-52H can carry up to 20 AGM-158 Joint Air-to-Surface Standoff Missiles (JASSM), with the baseline version exceeding 370 kilometers in range and the extended range variant surpassing 900 kilometers. These missiles use GPS guidance combined with a terminal infrared seeker to engage fixed targets with precision while allowing launch platforms to remain outside the densest segments of integrated air defense systems. Diego Garcia has previously supported similar operations in the Middle East.

Iranian retaliation combines ballistic missiles and unmanned aerial systems. One-way attack drones derived from the Shahed-136 design, with ranges exceeding 1,000 kilometers, rely on relatively simple satellite and inertial navigation systems, enabling low- cost salvo attacks. This approach is intended to saturate opposing air defense networks. In response, British and allied forces have activated layered defenses integrating surveillance radars, combat air patrols, and surface-to-air missile systems. Royal Air Force Typhoon FGR4 aircraft, equipped with the Captor-M radar and armed with long-range Meteor air-to-air missiles, are capable of intercepting aircraft and certain aerial threats under defined operational conditions, contributing to the protection of bases and sensitive airspace.

From a tactical perspective, the priority is to degrade Iran’s launch capacity before additional salvos occur. Destroying storage depots reduces available inventories, but mobile transporter-erector-launchers remain difficult to track once dispersed. Intelligence, surveillance, and reconnaissance assets, whether space- based or airborne, are therefore critical to detecting launch preparations. The use of standoff munitions allows aircraft to operate beyond the immediate reach of the most capable segments of Iran’s integrated air defense system, which includes S-300PMU-2 batteries with reported engagement ranges of up to approximately 200 kilometers against certain targets. Any sustained campaign would nevertheless require careful management of escalation risks, particularly if command and control facilities were targeted.

By authorizing the use of its bases, London frames its decision within the concept of collective self-defense, citing requests for assistance from Gulf partners and the presence of approximately 200,000 British nationals in the region.