RAF Typhoon jets have joined forces with French aircraft in a joint strike against an underground arms cache in Syrian territory used by the IS group, as stated by the UK's MoD.
The facility, identified by reconnaissance, was assessed as housing weapons and explosive materials, the announcement noted, and was situated in hills just to the north of the historic site of Palmyra in Syria's central region.
"Our aircraft used Paveway IV guided bombs to target a several access tunnels down to the depot... initial indications are that the objective was successfully hit," officials stated.
There was no evidence of any civilian impact in the strike on Saturday evening and all the aircraft returned to base without incident, the ministry further stated.
The Typhoon fighters were backed up by a Voyager aerial refuelling aircraft.
Daesh - referred to as ISIS - enforced jihadist rule over parts of Syria and Iraq until 2019.
"This strike underscores the UK's leading role, and resolve to operate in unison with allied nations, to eradicate any revival of the terrorist group and their harmful and extremist ideologies in the Middle East," the British Defence Secretary the minister said.
RAF aircraft have conducted surveillance missions over Syrian airspace to "deter any attempted comeback" of IS following its routing at the climactic battle in Baghuz in 2019, the ministry said.
"I must thank the personnel of the UK armed forces participating in this mission for their professionalism and their valour," he added. "Including them were a great many British personnel on duty over the festive period. This operation, to remove terrorist threats who threaten our security, demonstrates how British military are ready to step up, continuously, ensuring Britain's security within its borders and powerful internationally."
During December, the United States armed forces conducted what it termed a "massive strike" targeting IS targets in Syria, following an ambush claimed the lives of two US troops and a civilian linguist in Palmyra.
The UN reports Daesh still maintains an estimated 5,000 to 7,000 militants in Syria and Iraq.