Royal Air Force Typhoon fighter aircraft have conducted a mission with France's air force in a coordinated attack targeting an underground arms cache in Syria employed by the IS group, according to the UK's MoD.
The location, pinpointed through surveillance, was assessed as housing weapons and explosive materials, the statement said, and was situated in mountainous terrain just to the north of Palmyra in the heart of Syria.
"The RAF jets utilized Paveway IV guided bombs to strike a number of entry passages providing entry to the facility... early reports suggest the target was engaged successfully," officials stated.
There was no indication of any harm to civilians in the strike on Saturday evening and each participating jet returned safely, the MoD added.
The Typhoon fighters were assisted by a Voyager refuelling tanker.
Daesh - referred to as ISIS - established extremist governance over parts of both Syria and Iraq before its territorial defeat in 2019.
"This action shows our UK leadership, and determination to stand shoulder to shoulder with our partners, to eliminate any resurgence of Daesh and their harmful and extremist ideologies in the area," Britain's Defence Chief the minister remarked.
RAF aircraft have conducted patrols over Syria to "forestall any attempted comeback" of the group after its military defeat at the Baghuz confrontation in the year 2019, the ministry said.
"I must thank the personnel of our armed forces involved in this strike for their expertise and their bravery," Healey commented. "They were among a great many British personnel deployed over Christmas and New Year. This mission, to remove dangerous terrorists who endanger our safety, demonstrates how our armed forces are ready to step up, continuously, ensuring Britain's security at home and strong abroad."
In December, the American forces executed what it called a "major assault" on Islamic State objectives in the country, after an ambush claimed the lives of two US servicemembers and a civilian interpreter in the Palmyra area.
The United Nations reports IS still maintains an estimated 5,000 to 7,000 fighters in Syria and Iraq.