British Air Force Typhoon FGR4s have operated alongside French warplanes in a combined operation on an subterranean weapons facility in Syrian territory employed by the IS group, as stated by the British defence ministry.
The facility, pinpointed through intelligence, was assessed as containing munitions and bombs, the statement said, and was positioned in mountains just to the north of Palmyra in central Syria.
"The RAF jets utilized laser-guided Paveway IV weapons to target a number of access tunnels providing entry to the site... preliminary assessments indicate the strike was effective," officials stated.
There was no evidence of any civilian impact in the operation conducted Saturday night and all the aircraft returned safely, the defence officials confirmed.
The Typhoon FGR4s were supported by a Voyager tanker plane.
The Islamic State group - referred to as ISIS - established extremist governance over large swathes of Syria and Iraq until 2019.
"This strike shows our UK leadership, and resolve to work closely with our partners, to eliminate any resurgence of IS and their violent and radical beliefs in the Middle East," UK Defence Secretary the Defence Secretary stated.
UK warplanes have conducted surveillance missions over Syrian airspace to "forestall any efforts to regroup" of the group following its military defeat at the climactic battle in Baghuz in 2019, the MoD reported.
"I want to thank the personnel of the UK armed forces participating in this mission for their professionalism and their bravery," he said. "Including them were a great many British troops on duty over the festive period. This mission, to take out terrorist threats who endanger our way of life, demonstrates how UK forces are prepared to act, throughout the year, keeping Britain secure within its borders and strong abroad."
During December, the American forces executed what it called a "large-scale strike" on IS targets in Syria, subsequent to an ambush killed two US servicemembers and a civilian interpreter in Palmyra.
The UN reports Daesh still maintains roughly 5-7 thousand combatants in Syria and Iraq.
