Royal Air Force Typhoon jets have operated alongside French aircraft in a joint strike targeting an subterranean weapons facility in Syrian territory used by the Daesh militant organization, as stated by the UK's MoD.
The facility, located using reconnaissance, was assessed as housing weapons and explosive materials, the statement said, and was situated in mountainous terrain just above the historic site of Palmyra in the heart of Syria.
"The RAF jets used laser-guided Paveway IV weapons to target a series of approach shafts providing entry to the site... early reports suggest the objective was successfully hit," the ministry announced.
There was no indication of any civilian casualties in the operation on Saturday evening and every plane involved made a safe return, the ministry further stated.
The British jets were backed up by a Voyager refuelling tanker.
IS - referred to as Daesh - imposed extremist governance over large swathes of Syria and Iraq prior to its 2019 collapse.
"This strike underscores British leadership, and determination to stand shoulder to shoulder with allied nations, to eradicate any resurgence of the terrorist group and their violent and radical beliefs in the area," the British Defence Secretary the Defence Secretary said.
RAF aircraft have performed patrols over Syrian airspace to "prevent any efforts to regroup" of IS following its military defeat at the climactic battle in Baghuz in 2019, the authorities noted.
"I must thank every member of our armed forces involved in this mission for their skill and their courage," the Defence Secretary said. "Including them were numerous British personnel stationed over the holidays. This mission, to remove militants who threaten our security, shows how our armed forces are ready to step up, continuously, protecting the UK domestically and powerful internationally."
Last December, the US military conducted what it called a "large-scale strike" targeting Islamic State objectives in Syria, subsequent to an attack resulted in the deaths of two American soldiers and a civilian linguist in the Palmyra area.
The UN reports IS still maintains an estimated 5,000 to 7,000 fighters in Iraq and Syria.