RAF Typhoon fighter aircraft have conducted a mission with France's air force in a coordinated attack targeting an hidden munitions depot in Syrian territory employed by the IS group, according to the UK's MoD.
The facility, identified by intelligence, was assessed as housing weapons and explosive materials, the statement said, and was located in mountains just above the ancient city of Palmyra in Syria's central region.
"Our fighter planes employed precision-guided Paveway IV munitions to hit a series of entry passages down to the depot... preliminary assessments indicate the target was engaged successfully," officials stated.
There was no sign of any harm to civilians in the operation late on Saturday and each participating jet returned to base without incident, the ministry further stated.
The British jets were supported by a Voyager refuelling tanker.
Daesh - alternatively referred to as ISIS - enforced militant control over parts of Syria and Iraq prior to its 2019 collapse.
"This strike demonstrates the UK's leading role, and resolve to work closely with our allies, to eliminate any re-emergence of Daesh and their violent and radical beliefs in the region," the British Defence Secretary the minister said.
RAF aircraft have performed patrols over Syrian airspace to "forestall any attempted resurgence" of Islamic State following its defeat at the Baghuz confrontation in the year 2019, the ministry said.
"I extend gratitude to the personnel of the UK armed forces involved in this strike for their skill and their bravery," he said. "They were among thousands of British personnel deployed over the holidays. This operation, to eliminate militants who threaten our safety, highlights how British military are ready to step up, continuously, protecting the UK at home and powerful internationally."
Last December, the American forces conducted what it described as a "major assault" against IS targets in Syria, following an ambush killed two US troops and a civilian linguist in Palmyra.
The U.N. reports IS still has roughly 5-7 thousand fighters in Syria and Iraq.
