Royal Air Force Typhoon FGR4s have conducted a mission with French warplanes in a coordinated attack against an hidden munitions depot in Syria operated by the IS group, according to the UK's MoD.
The facility, located using intelligence, was believed to be housing weapons and explosive materials, the statement said, and was situated in mountains just north of Palmyra in the heart of Syria.
"The RAF jets utilized laser-guided Paveway IV weapons to strike a series of entry passages down to the facility... initial indications indicate the target was engaged successfully," the ministry announced.
There was no sign of any civilian casualties in the strike conducted Saturday night and every plane involved returned safely, the defence officials confirmed.
The Typhoon FGR4s were backed up by a Voyager tanker plane.
IS - also known as the so-called Islamic State - imposed militant control over significant areas in Syria and Iraq before its territorial defeat in 2019.
"This operation shows our UK leadership, and determination to stand shoulder to shoulder with our partners, to eliminate any resurgence of the terrorist group and their dangerous and violent ideologies in the area," the British Defence Secretary John Healey remarked.
RAF aircraft have conducted surveillance missions over Syria to "deter any attempted comeback" of IS subsequent to its routing at the Baghuz confrontation in 2019, the ministry said.
"I extend gratitude to every member of our armed forces participating in this mission for their skill and their courage," Healey commented. "Including them were a great many British personnel stationed over the festive period. This action, to take out militants who threaten our way of life, shows how UK forces are ready to step up, continuously, keeping Britain secure within its borders and influential overseas."
In December, the American forces conducted what it termed a "large-scale strike" against IS targets in Syria, subsequent to an ambush claimed the lives of two US troops and a local interpreter in the Palmyra area.
The U.N. reports Islamic State still boasts roughly 5-7 thousand fighters in Syria and Iraq.
