British Air Force Typhoon fighter aircraft have joined forces with French aircraft in a coordinated attack against an subterranean weapons facility in Syria used by the IS group, per a report from the UK Ministry of Defence.
The location, located using reconnaissance, was thought to be storing arms and explosives, the announcement noted, and was situated in mountains just to the north of the ancient city of Palmyra in Syria's central region.
"Our fighter planes utilized Paveway IV guided bombs to hit a number of access tunnels providing entry to the depot... preliminary assessments indicate the strike was effective," the MoD said.
There was no indication of any civilian impact in the strike conducted Saturday night and all the aircraft made a safe return, the defence officials confirmed.
The Typhoon FGR4s were backed up by a Voyager refuelling tanker.
Daesh - alternatively referred to as the so-called Islamic State - established extremist governance over large swathes of both Syria and Iraq until 2019.
"This operation demonstrates British leadership, and commitment to stand shoulder to shoulder with our allies, to stamp out any resurgence of the terrorist group and their harmful and extremist ideologies in the region," the British Defence Secretary John Healey said.
UK warplanes have conducted overwatch operations over Syria to "prevent any efforts to regroup" of the group subsequent to its defeat at the battle of Baghuz in the year 2019, the ministry said.
"I extend gratitude to every member of our armed forces participating in this mission for their expertise and their courage," Healey said. "Including them were a great many British personnel deployed over the festive period. This action, to take out militants who endanger our security, demonstrates how UK forces are prepared to act, continuously, keeping Britain secure domestically and strong abroad."
In December, the American forces carried out what it called a "massive strike" on Daesh sites in the country, following an attack resulted in the deaths of two American soldiers and a local interpreter in Palmyra.
The United Nations reports Daesh still has an estimated 5,000 to 7,000 militants in Syria and Iraq.
