5 men arrested near UK air base used by US in Iran war on suspicion of preparing a terrorist act

U.K. police said that five men arrested in the early hours of Sunday near an air base used by the United States during its war against Iran are being held on suspicion of preparing a terrorist act that appeared to involve three trucks.

London’s Metropolitan Police, which takes the lead on potential terrorist activities, said police received a call at 12:45 a.m. related to the three suspicious vehicles that appeared to be traveling toward RAF Fairford, a U.K.-owned base that is operated by the U.S. under an agreement dating back to the Cold War.

The arrests come at a time of heightened tensions around the threat from hostile states to the U.K., with Russia and Iran among those that have used proxies to commit crimes on their behalf on British soil. In March, officials said the number of national security cases involving activity by hostile states including Iran increased 50% in the six months to December 2025.

Fairford has been used by American bombers for strictly limited strikes against Iranian missile sites under an agreement with former British Prime Minister Keir Starmer, who voiced opposition to the war after it was launched by the U.S. and Israel on Feb. 28.

Read more: AP