Royal Air Force Typhoon fighter aircraft have operated alongside France's air force in a combined operation targeting an underground arms cache in Syria operated by the Islamic State group (IS), according to the UK's MoD.
The site, pinpointed through intelligence, was believed to be housing weapons and explosive materials, the release indicated, and was located in mountains just to the north of the historic site of Palmyra in the heart of Syria.
"The RAF jets used precision-guided Paveway IV munitions to target a several entry passages providing entry to the depot... early reports are that the objective was successfully hit," the ministry announced.
There was no sign of any civilian impact in the attack conducted Saturday night and every plane involved made a safe return, the defence officials confirmed.
The Typhoon fighters were assisted by a Voyager refuelling tanker.
Daesh - also known as the so-called Islamic State - enforced militant control over parts of both Syria and Iraq until 2019.
"This strike underscores British leadership, and determination to stand shoulder to shoulder with our allies, to stamp out any re-emergence of IS and their dangerous and violent ideologies in the area," UK Defence Secretary the Defence Secretary said.
RAF aircraft have carried out surveillance missions over Syrian airspace to "prevent any attempted resurgence" of IS subsequent to its routing at the Baghuz confrontation in 2019, the authorities noted.
"I want to thank all the members of British forces participating in this operation for their skill and their courage," Healey added. "Including them were numerous UK service members stationed over Christmas and New Year. This mission, to remove terrorist threats who endanger our way of life, demonstrates how British military are always on standby, continuously, keeping Britain secure at home and powerful internationally."
Last December, the United States armed forces conducted what it termed a "major assault" against Daesh sites in the country, after an attack claimed the lives of two US servicemembers and a civilian interpreter in Palmyra.
The U.N. estimates Daesh still maintains roughly 5-7 thousand fighters in Syria and Iraq.