British Air Force Typhoon jets have operated alongside French aircraft in a joint strike against an underground arms cache in Syria employed by the IS group, per a report from the British defence ministry.
The site, pinpointed through reconnaissance, was believed to be housing weapons and explosive materials, the announcement noted, and was situated in mountains just to the north of Palmyra in the heart of Syria.
"Our aircraft used precision-guided Paveway IV munitions to strike a series of access tunnels leading to the site... preliminary assessments are that the target was engaged successfully," officials stated.
There was no indication of any civilian casualties in the strike on Saturday evening and each participating jet made a safe return, the MoD added.
The British jets were supported by a Voyager aerial refuelling aircraft.
Daesh - referred to as ISIS - imposed militant control over large swathes of Iraq and Syria prior to its 2019 collapse.
"This strike demonstrates our UK leadership, and resolve to work closely with our allies, to eliminate any re-emergence of Daesh and their harmful and extremist ideologies in the Middle East," Britain's Defence Chief the Defence Secretary stated.
British military aircraft have carried out overwatch operations over Syrian airspace to "deter any attempted comeback" of the group after its routing at the battle of Baghuz in 2019, the ministry said.
"I extend gratitude to all the members of our armed forces participating in this strike for their expertise and their courage," he commented. "They were part of a great many UK service members stationed over the festive period. This mission, to eliminate dangerous terrorists who endanger our safety, highlights how our armed forces are always on standby, continuously, ensuring Britain's security domestically and strong abroad."
In December, the United States armed forces carried out what it termed a "massive strike" against IS targets in Syria, subsequent to an ambush resulted in the deaths of two American soldiers and a civilian linguist in Palmyra.
The UN reports Islamic State still maintains roughly 5-7 thousand combatants in Syria and Iraq.