British Air Force Typhoon jets have operated alongside France's air force in a joint strike against an subterranean weapons facility in Syria operated by the Islamic State group (IS), per a report from the UK's MoD.
The location, located using intelligence, was assessed as containing munitions and bombs, the statement said, and was situated in mountainous terrain just north of the ancient city of Palmyra in Syria's central region.
"The RAF jets utilized Paveway IV guided bombs to hit a several entry passages down to the site... preliminary assessments suggest the target was engaged successfully," the MoD said.
There was no sign of any harm to civilians in the attack late on Saturday and each participating jet made a safe return, the defence officials confirmed.
The British jets were backed up by a Voyager aerial refuelling aircraft.
Daesh - also known as the so-called Islamic State - established extremist governance over significant areas in Iraq and Syria until 2019.
"This operation demonstrates the UK's leading role, and determination to stand shoulder to shoulder with allied nations, to eliminate any re-emergence of IS and their harmful and extremist ideologies in the Middle East," Britain's Defence Chief the Defence Secretary stated.
UK warplanes have conducted patrols over Syrian airspace to "prevent any attempted comeback" of Islamic State after its military defeat at the climactic battle in Baghuz in the year 2019, the ministry said.
"I want to thank every member of our armed forces participating in this operation for their expertise and their bravery," Healey said. "Including them were numerous UK service members on duty over the holidays. This mission, to remove militants who threaten our safety, demonstrates how our armed forces are prepared to act, all year round, keeping Britain secure domestically and strong abroad."
Last December, the US military executed what it described as a "major assault" on Islamic State objectives in Syria, following an ambush claimed the lives of two US troops and a civilian interpreter in the Palmyra area.
The U.N. says Islamic State still boasts between 5,000 and 7,000 combatants in both countries.