RAF Typhoon fighter aircraft have operated alongside French aircraft in a joint strike on an subterranean weapons facility in Syrian territory used by the Daesh militant organization, according to the UK Ministry of Defence.
The site, located using reconnaissance, was assessed as containing munitions and bombs, the announcement noted, and was located in mountainous terrain just to the north of Palmyra in central Syria.
"Our aircraft used Paveway IV guided bombs to hit a several approach shafts providing entry to the site... initial indications suggest the strike was effective," officials stated.
There was no indication of any harm to civilians in the operation late on Saturday and each participating jet returned safely, the defence officials confirmed.
The British jets were backed up by a Voyager refuelling tanker.
IS - referred to as the so-called Islamic State - imposed jihadist rule over large swathes of Iraq and Syria before its territorial defeat in 2019.
"This strike demonstrates British leadership, and commitment to operate in unison with allied nations, to stamp out any resurgence of the terrorist group and their violent and radical beliefs in the area," Britain's Defence Chief John Healey said.
RAF aircraft have carried out surveillance missions over Syrian airspace to "forestall any attempted comeback" of Islamic State subsequent to its routing at the climactic battle in Baghuz in the year 2019, the authorities noted.
"I extend gratitude to every member of British forces participating in this operation for their professionalism and their bravery," the Defence Secretary added. "Including them were thousands of UK service members stationed over the festive period. This mission, to take out dangerous terrorists who pose a risk to our security, demonstrates how UK forces are prepared to act, throughout the year, ensuring Britain's security at home and influential overseas."
In December, the United States armed forces carried out what it termed a "massive strike" targeting Islamic State objectives in Syria, following an ambush claimed the lives of two US servicemembers and a local interpreter in Palmyra.
The U.N. says Islamic State still maintains an estimated 5,000 to 7,000 combatants in Iraq and Syria.
