Royal Air Force Typhoon jets have operated alongside France's air force in a combined operation against an subterranean weapons facility in Syrian territory used by the IS group, as stated by the UK Ministry of Defence.
The location, pinpointed through intelligence, was assessed as containing munitions and bombs, the release indicated, and was situated in mountainous terrain just above Palmyra in Syria's central region.
"Our aircraft employed laser-guided Paveway IV weapons to strike a number of access tunnels leading to the depot... preliminary assessments suggest the target was engaged successfully," the MoD said.
There was no sign of any harm to civilians in the strike conducted Saturday night and all the aircraft returned to base without incident, the ministry further stated.
The British jets were assisted by a Voyager aerial refuelling aircraft.
IS - alternatively referred to as the so-called Islamic State - established jihadist rule over parts of both Syria and Iraq prior to its 2019 collapse.
"This action demonstrates the UK's leading role, and resolve to stand shoulder to shoulder with allied nations, to eradicate any re-emergence of the terrorist group and their harmful and extremist ideologies in the Middle East," Britain's Defence Chief the Defence Secretary remarked.
British military aircraft have carried out surveillance missions over Syria to "forestall any efforts to regroup" of the group subsequent to its routing at the climactic battle in Baghuz in 2019, the ministry said.
"I want to thank every member of the UK armed forces involved in this strike for their professionalism and their valour," the Defence Secretary said. "They were part of numerous British personnel deployed over the festive period. This mission, to take out dangerous terrorists who pose a risk to our safety, demonstrates how UK forces are always on standby, throughout the year, protecting the UK at home and strong abroad."
In December, the American forces executed what it termed a "major assault" against Daesh sites in Syria, after an ambush killed two American soldiers and a civilian interpreter in Palmyra.
The United Nations reports IS still has an estimated 5,000 to 7,000 fighters in Iraq and Syria.
