An Iranian military group has issued a warning to the UK over allowing US forces to use British bases for strikes on Iran.

US military aircraft have been based at RAF Fairford in Gloucestershire, pictured here in April 2026 The British government has said it "stands ready 24/7 to defend itself" after Iran said UK bases used by the US were considered "legitimate targets". The UK has allowed the US to launch "defensive" operations from British bases hosting American personnel and aircraft, while refusing to cooperate in offensive operations against Iran. Iran's foreign ministry said the UK was an "accomplice" in the US war, while the powerful Islamic Revolution Guards Corps (IRGC) military wing said any country which supports the US militarily "will be responsible for the consequences and repercussions". It came after the US carried out a 12th consecutive night of strikes against targets in Iran. While US President Donald Trump has repeatedly criticised the British government and former Prime Minister Sir Keir Starmer for what he has deemed a lack of support for his war, Iran's comments on 23 July sought to paint the UK as a party to the campaign. In March, days into the US-Israel led war, permission was given to the US for it to use British bases including RAF Fairford in Gloucestershire and Diego Garcia in the Indian Ocean to target Iranian military infrastructure used to attack Gulf countries and vessels in the Strait of Hormuz. That policy has not been altered by new Prime Minister Andy Burnham, who was notified last week that a decision had been taken to extend the agreement with the US.