As the threat of military escalation between Iran and Israel grows, the UK government has taken a firm position on the potential use of its overseas territories in any offensive operation. Prime Minister Keir Starmer has confirmed that any attempt by the United States to launch airstrikes on Iran from the strategically located Diego Garcia base in the Indian Ocean would require explicit British approval. While no formal request has yet been made by Washington, conversations are underway behind closed doors, and Downing Street has been clear: the UK holds the final authority.
Diego Garcia, while jointly operated by the UK and US, remains under British sovereignty. Starmer made it clear that no offensive operation can take place from there, or from other UK-controlled bases like those in Cyprus or RAF Fairford, without sign-off from both ministers and legal advisors. This cautious approach reflects growing concerns within the British government about being drawn into an open military conflict in the Middle East without clear international legal backing.
Attorney General Lord Hermer has reportedly warned that the UK’s involvement in any offensive strikes could violate international law unless explicitly justified by self-defence or a UN mandate. As a result, the UK is currently limiting its military posture to defensive readiness. British forces in Cyprus and other regional bases are on alert to protect UK personnel and diplomatic staff, but there is no move at this stage to prepare for offensive action.
The UK’s stance also reflects a broader diplomatic strategy. Foreign Secretary David Lammy is currently in Washington, engaging with US officials to ensure that any actions taken are coordinated and lawful. Lammy, like Starmer, has stressed the importance of avoiding escalation and prioritizing diplomacy.
While Diego Garcia is being readied to support logistical operations, such as hosting US bombers or refueling aircraft, the UK has drawn a line: support must be defensive unless Parliament and legal experts approve otherwise. Despite its remote location, Diego Garcia has become a symbol of the UK’s role in global security and the limits of that role.
This position sends a clear message. Britain stands with its allies and supports Israel’s right to self-defence, but it will not be rushed into conflict. Any step toward offensive involvement will be weighed carefully, with legality, strategy, and long-term consequences all taken into account.
