RAF Typhoon FGR4s have operated alongside French warplanes in a joint strike targeting an underground arms cache in Syria operated by the IS group, as stated by the British defence ministry.
The location, identified by intelligence, was thought to be housing weapons and explosive materials, the announcement noted, and was positioned in mountainous terrain just to the north of the historic site of Palmyra in central Syria.
"The RAF jets employed Paveway IV guided bombs to hit a series of access tunnels providing entry to the depot... initial indications are that the objective was successfully hit," the ministry announced.
There was no indication of any harm to civilians in the strike late on Saturday and every plane involved returned to base without incident, the ministry further stated.
The Typhoon FGR4s were supported by a Voyager tanker plane.
The Islamic State group - alternatively referred to as the so-called Islamic State - established militant control over significant areas in Iraq and Syria prior to its 2019 collapse.
"This strike underscores our UK leadership, and determination to stand shoulder to shoulder with allied nations, to eradicate any resurgence of the terrorist group and their violent and radical beliefs in the area," the British Defence Secretary the Defence Secretary said.
RAF aircraft have carried out overwatch operations over Syrian airspace to "deter any attempted resurgence" of Islamic State following its military defeat at the climactic battle in Baghuz in 2019, the authorities noted.
"I extend gratitude to all the members of British forces participating in this operation for their expertise and their valour," the Defence Secretary said. "They were part of thousands of UK service members on duty over the holidays. This mission, to take out dangerous terrorists who threaten our safety, highlights how British military are always on standby, all year round, ensuring Britain's security domestically and strong abroad."
In December, the American forces carried out what it termed a "major assault" against Daesh sites in the country, after an assault killed two US troops and a civilian linguist in the Palmyra area.
The UN reports Daesh still boasts between 5,000 and 7,000 militants in Iraq and Syria.
