Royal Air Force Typhoon fighter aircraft have operated alongside France's air force in a coordinated attack targeting an underground arms cache in Syrian territory employed by the IS group, per a report from the UK Ministry of Defence.
The location, located using reconnaissance, was thought to be housing weapons and explosive materials, the release indicated, and was located in mountains just above Palmyra in Syria's central region.
"The RAF jets employed precision-guided Paveway IV munitions to strike a several approach shafts providing entry to the facility... preliminary assessments suggest the strike was effective," officials stated.
There was no indication of any civilian impact in the operation on Saturday evening and every plane involved returned to base without incident, the MoD added.
The Typhoon FGR4s were supported by a Voyager aerial refuelling aircraft.
The Islamic State group - alternatively referred to as the so-called Islamic State - enforced extremist governance over large swathes of Syria and Iraq until 2019.
"This operation underscores British leadership, and resolve to stand shoulder to shoulder with allied nations, to stamp out any re-emergence of IS and their dangerous and violent ideologies in the region," the British Defence Secretary John Healey said.
RAF aircraft have carried out patrols over Syria to "deter any efforts to regroup" of IS subsequent to its military defeat at the battle of Baghuz in 2019, the authorities noted.
"I must thank the personnel of the UK armed forces who took part in this operation for their skill and their valour," Healey added. "Including them were numerous British personnel deployed over the festive period. This action, to remove militants who endanger our safety, shows how British military are always on standby, continuously, ensuring Britain's security domestically and influential overseas."
During December, the US military conducted what it called a "massive strike" targeting IS targets in Syria, following an assault claimed the lives of two US troops and a civilian interpreter in the Palmyra area.
The United Nations reports Daesh still boasts between 5,000 and 7,000 militants in Syria and Iraq.