British Air Force Typhoon jets have joined forces with French warplanes in a joint strike targeting an hidden munitions depot in Syrian territory operated by the IS group, according to the UK's MoD.
The location, located using surveillance, was thought to be containing munitions and bombs, the announcement noted, and was positioned in mountains just north of the historic site of Palmyra in central Syria.
"Our fighter planes used laser-guided Paveway IV weapons to strike a several approach shafts down to the depot... initial indications are that the strike was effective," officials stated.
There was no sign of any civilian impact in the attack on Saturday evening and each participating jet made a safe return, the ministry further stated.
The Typhoon FGR4s were supported by a Voyager aerial refuelling aircraft.
The Islamic State group - also known as ISIS - enforced jihadist rule over large swathes of Syria and Iraq prior to its 2019 collapse.
"This action underscores our UK leadership, and commitment to operate in unison with our partners, to eradicate any re-emergence of Daesh and their harmful and extremist ideologies in the area," Britain's Defence Chief John Healey remarked.
RAF aircraft have carried out patrols over Syrian airspace to "deter any attempted resurgence" of Islamic State following its military defeat at the Baghuz confrontation in 2019, the ministry said.
"I extend gratitude to the personnel of our armed forces participating in this mission for their professionalism and their bravery," Healey added. "They were part of numerous British troops stationed over the holidays. This operation, to remove terrorist threats who endanger our safety, highlights how British military are ready to step up, all year round, ensuring Britain's security domestically and influential overseas."
During December, the United States armed forces carried out what it termed a "major assault" against IS targets in Syria, following an assault killed two US troops and a civilian linguist in Palmyra.
The UN reports Daesh still boasts between 5,000 and 7,000 fighters in both countries.
