Royal Air Force Typhoon FGR4s have joined forces with French warplanes in a combined operation on an underground arms cache in Syria employed by the Daesh militant organization, according to the UK Ministry of Defence.
The facility, located using reconnaissance, was thought to be storing arms and explosives, the announcement noted, and was located in mountains just above the ancient city of Palmyra in central Syria.
"The RAF jets employed laser-guided Paveway IV weapons to strike a several approach shafts providing entry to the site... early reports suggest the strike was effective," the ministry announced.
There was no evidence of any civilian impact in the strike late on Saturday and each participating jet made a safe return, the MoD added.
The Typhoon FGR4s were assisted by a Voyager tanker plane.
The Islamic State group - referred to as Daesh - established militant control over significant areas in Iraq and Syria until 2019.
"This action demonstrates our UK leadership, and resolve to operate in unison with our partners, to eradicate any re-emergence of Daesh and their dangerous and violent ideologies in the region," the British Defence Secretary the minister said.
British military aircraft have carried out surveillance missions over Syrian airspace to "prevent any efforts to regroup" of the group following its routing at the battle of Baghuz in 2019, the MoD reported.
"I want to thank the personnel of British forces who took part in this operation for their expertise and their valour," he commented. "Including them were thousands of UK service members stationed over the festive period. This mission, to take out terrorist threats who threaten our security, shows how British military are prepared to act, throughout the year, protecting the UK at home and powerful internationally."
Last December, the US military conducted what it termed a "large-scale strike" against IS targets in Syria, following an ambush resulted in the deaths of two American soldiers and a local interpreter in Palmyra.
The U.N. says Daesh still has between 5,000 and 7,000 fighters in both countries.
