Royal Air Force Typhoon jets have operated alongside French aircraft in a coordinated attack targeting an hidden munitions depot in Syria operated by the Daesh militant organization, as stated by the UK's MoD.
The facility, identified by reconnaissance, was thought to be containing munitions and bombs, the statement said, and was positioned in mountainous terrain just to the north of the historic site of Palmyra in the heart of Syria.
"The RAF jets employed laser-guided Paveway IV weapons to target a several approach shafts leading to the depot... preliminary assessments are that the objective was successfully hit," the MoD said.
There was no evidence of any civilian casualties in the attack conducted Saturday night and all the aircraft returned to base without incident, the defence officials confirmed.
The Typhoon fighters were backed up by a Voyager refuelling tanker.
The Islamic State group - referred to as Daesh - imposed militant control over significant areas in Iraq and Syria until 2019.
"This strike underscores the UK's leading role, and determination to operate in unison with our partners, to eliminate any resurgence of IS and their harmful and extremist ideologies in the area," Britain's Defence Chief the Defence Secretary said.
British military aircraft have carried out surveillance missions over Syria to "forestall any attempted comeback" of Islamic State following its defeat at the Baghuz confrontation in 2019, the authorities noted.
"I must thank the personnel of the UK armed forces participating in this mission for their professionalism and their courage," Healey said. "They were part of thousands of British personnel on duty over the holidays. This operation, to eliminate dangerous terrorists who endanger our security, demonstrates how British military are prepared to act, throughout the year, keeping Britain secure within its borders and influential overseas."
Last December, the US military conducted what it described as a "massive strike" targeting Daesh sites in the country, after an attack claimed the lives of two US troops and a civilian interpreter in the Palmyra area.
The U.N. reports IS still has between 5,000 and 7,000 combatants in Iraq and Syria.
