The UK is mounting an operation to support at least 200,000 British nationals in the Gulf, as Iran continues to launch strikes in the region in response to an ongoing attack by Israel and the US.
More than 94,000 Britons have registered their location and contact details to receive direct Foreign Office updates, with the majority being holidaymakers in the United Arab Emirates or people in transit at major hub airports.
Government officials are understood to be formulating potential plans to evacuate UK nationals, should airspace in the region remain closed.
Flights have been diverted or cancelled, with journeys to and from Tel Aviv, Dubai, Doha and other international hubs affected.
The government has asked British nationals in Bahrain, Israel, Kuwait, the Palestinian territories, Qatar and UAE to register their presence to receive updates.
