Royal Air Force Typhoon jets have conducted a mission with French warplanes in a coordinated attack on an subterranean weapons facility in Syria employed by the IS group, as stated by the UK's MoD.
The location, located using intelligence, was believed to be storing arms and explosives, the statement said, and was situated in mountains just to the north of the historic site of Palmyra in central Syria.
"Our aircraft used Paveway IV guided bombs to strike a series of entry passages down to the facility... early reports are that the strike was effective," the ministry announced.
There was no sign of any harm to civilians in the attack late on Saturday and all the aircraft returned safely, the defence officials confirmed.
The Typhoon fighters were assisted by a Voyager refuelling tanker.
IS - alternatively referred to as the so-called Islamic State - imposed extremist governance over significant areas in Syria and Iraq before its territorial defeat in 2019.
"This action shows the UK's leading role, and commitment to work closely with our partners, to eliminate any resurgence of the terrorist group and their dangerous and violent ideologies in the area," the British Defence Secretary the minister remarked.
RAF aircraft have carried out surveillance missions over Syria to "prevent any efforts to regroup" of Islamic State following its defeat at the Baghuz confrontation in 2019, the ministry said.
"I must thank all the members of British forces involved in this mission for their professionalism and their bravery," the Defence Secretary commented. "They were among numerous British personnel on duty over Christmas and New Year. This mission, to eliminate terrorist threats who threaten our security, demonstrates how our armed forces are prepared to act, all year round, keeping Britain secure at home and strong abroad."
During December, the United States armed forces executed what it described as a "massive strike" against Daesh sites in Syria, after an assault claimed the lives of two American soldiers and a civilian interpreter in the Palmyra area.
The United Nations reports Islamic State still maintains roughly 5-7 thousand fighters in both countries.
