The UAE also said it had intercepted Iranian missiles and drones, while footage appears to show the moment a US facility in Bahrain was hit.
Kuwait said it had been targeted by Iranian missiles and drones. Explosions were heard at Erbil airport in Iraq early on Sunday morning.
The UK Foreign Office is warning “against all travel to Israel and Palestine”, and against all but essential travel to Bahrain, Qatar, Kuwait and the UAE.
British people in those areas have been urged to register their presence with the Foreign Office, with more than 76,000 people having already done so, mostly in the UAE.
For British nationals in Oman, the Foreign Office advises those in Duqm to shelter in place, and those in Salalah to leave as soon as possible if commercial means allow and follow advice from local authorities.
UK nationals in Saudi Arabia have been told to “remain indoors in a secure location”, while those in Jordan, Syria, Lebanon, Iraq, Yemen, and Turkey have been instructed to “remain vigilant” and take shelter if advised to do so.
The Foreign Office has urged people in Pakistan to be careful around protests, demonstrations, rallies and religious gatherings, after deadly pro-Iran protests broke out in several cities. It also instructed staff in the country to restrict their movements.
US President Donald Trump cited a failure to reach an agreement to limit Iran’s nuclear programme and regime change as among the reasons for launching the attack.
Prime Minister Sir Keir Starmer spoke to Trump on Saturday, having earlier said that British planes were “in the sky” over the Middle East as part of a defensive operation “to protect our people, our interests and our allies”.
Along with the leaders of France and Germany, he urged Iran to refrain from “indiscriminate” strikes.
Additional reporting by Mary Litchfield
