Royal Air Force Typhoon jets have conducted a mission with France's air force in a joint strike against an subterranean weapons facility in Syria used by the IS group, according to the British defence ministry.
The facility, located using intelligence, was assessed as storing arms and explosives, the release indicated, and was positioned in hills just north of the ancient city of Palmyra in the heart of Syria.
"Our fighter planes utilized laser-guided Paveway IV weapons to target a series of entry passages leading to the site... initial indications suggest the target was engaged successfully," the ministry announced.
There was no evidence of any civilian casualties in the strike on Saturday evening and all the aircraft returned safely, the defence officials confirmed.
The Typhoon fighters were backed up by a Voyager tanker plane.
The Islamic State group - alternatively referred to as the so-called Islamic State - established militant control over significant areas in Syria and Iraq until 2019.
"This strike demonstrates British leadership, and resolve to stand shoulder to shoulder with our partners, to stamp out any resurgence of IS and their harmful and extremist ideologies in the region," Britain's Defence Chief the minister stated.
UK warplanes have performed patrols over Syrian airspace to "forestall any attempted comeback" of the group subsequent to its defeat at the battle of Baghuz in 2019, the MoD reported.
"I must thank every member of our armed forces participating in this strike for their professionalism and their valour," he said. "Including them were thousands of British troops deployed over the holidays. This operation, to eliminate terrorist threats who threaten our way of life, shows how UK forces are always on standby, throughout the year, ensuring Britain's security at home and powerful internationally."
During December, the US military conducted what it termed a "massive strike" on Daesh sites in Syria, subsequent to an assault resulted in the deaths of two US servicemembers and a civilian linguist in Palmyra.
The United Nations reports Daesh still has between 5,000 and 7,000 combatants in Iraq and Syria.