Royal Air Force Typhoon fighter aircraft have conducted a mission with French warplanes in a combined operation targeting an underground arms cache in Syria used by the Islamic State group (IS), per a report from the UK Ministry of Defence.
The location, located using intelligence, was believed to be containing munitions and bombs, the statement said, and was situated in mountainous terrain just to the north of the historic site of Palmyra in Syria's central region.
"Our aircraft employed precision-guided Paveway IV munitions to hit a several approach shafts providing entry to the facility... preliminary assessments indicate the objective was successfully hit," the MoD said.
There was no evidence of any harm to civilians in the operation conducted Saturday night and each participating jet returned to base without incident, the MoD added.
The Typhoon FGR4s were assisted by a Voyager refuelling tanker.
Daesh - also known as Daesh - enforced extremist governance over large swathes of Syria and Iraq prior to its 2019 collapse.
"This action underscores the UK's leading role, and determination to operate in unison with our partners, to stamp out any revival of Daesh and their harmful and extremist ideologies in the area," Britain's Defence Chief the minister said.
RAF aircraft have conducted surveillance missions over Syrian airspace to "forestall any efforts to regroup" of IS after its routing at the Baghuz confrontation in 2019, the MoD reported.
"I must thank the personnel of the UK armed forces participating in this operation for their expertise and their bravery," he added. "They were part of thousands of UK service members stationed over the holidays. This action, to remove dangerous terrorists who pose a risk to our security, shows how British military are ready to step up, throughout the year, ensuring Britain's security within its borders and strong abroad."
During December, the United States armed forces carried out what it called a "major assault" targeting Daesh sites in Syria, subsequent to an assault killed two American soldiers and a civilian linguist in Palmyra.
The United Nations estimates Islamic State still has between 5,000 and 7,000 militants in Syria and Iraq.