RAF Typhoon jets have joined forces with French warplanes in a coordinated attack against an underground arms cache in Syria employed by the IS group, as stated by the UK Ministry of Defence.
The location, identified by reconnaissance, was thought to be storing arms and explosives, the release indicated, and was situated in mountains just north of the historic site of Palmyra in the heart of Syria.
"Our aircraft utilized precision-guided Paveway IV munitions to hit a series of entry passages providing entry to the site... initial indications indicate the objective was successfully hit," officials stated.
There was no indication of any civilian casualties in the attack on Saturday evening and every plane involved returned safely, the defence officials confirmed.
The Typhoon FGR4s were backed up by a Voyager refuelling tanker.
IS - referred to as the so-called Islamic State - established extremist governance over significant areas in Syria and Iraq prior to its 2019 collapse.
"This strike demonstrates British leadership, and determination to stand shoulder to shoulder with our allies, to eliminate any resurgence of the terrorist group and their dangerous and violent ideologies in the area," Britain's Defence Chief the minister said.
UK warplanes have carried out overwatch operations over Syrian airspace to "deter any attempted resurgence" of IS following its routing at the climactic battle in Baghuz in 2019, the authorities noted.
"I extend gratitude to all the members of British forces who took part in this operation for their expertise and their bravery," the Defence Secretary added. "Including them were thousands of British troops on duty over the holidays. This action, to eliminate militants who threaten our security, demonstrates how our armed forces are prepared to act, continuously, keeping Britain secure domestically and strong abroad."
In December, the United States armed forces carried out what it termed a "major assault" against Daesh sites in Syria, after an attack claimed the lives of two US servicemembers and a civilian linguist in the Palmyra area.
The UN reports Islamic State still maintains an estimated 5,000 to 7,000 combatants in Iraq and Syria.
