British Air Force Typhoon fighter aircraft have operated alongside France's air force in a coordinated attack against an subterranean weapons facility in Syrian territory employed by the IS group, according to the British defence ministry.
The location, pinpointed through surveillance, was believed to be containing munitions and bombs, the statement said, and was positioned in hills just above Palmyra in Syria's central region.
"Our fighter planes used precision-guided Paveway IV munitions to hit a series of approach shafts leading to the site... early reports suggest the strike was effective," the MoD said.
There was no indication of any harm to civilians in the strike late on Saturday and each participating jet made a safe return, the defence officials confirmed.
The British jets were assisted by a Voyager refuelling tanker.
The Islamic State group - referred to as ISIS - established extremist governance over significant areas in both Syria and Iraq until 2019.
"This operation underscores the UK's leading role, and commitment to work closely with our allies, to eradicate any revival of IS and their violent and radical beliefs in the Middle East," Britain's Defence Chief the minister remarked.
UK warplanes have conducted patrols over Syrian airspace to "prevent any efforts to regroup" of the group after its military defeat at the Baghuz confrontation in 2019, the ministry said.
"I want to thank every member of British forces who took part in this operation for their expertise and their courage," Healey commented. "Including them were a great many British troops deployed over the festive period. This mission, to take out terrorist threats who endanger our safety, demonstrates how our armed forces are always on standby, all year round, protecting the UK at home and powerful internationally."
In December, the US military carried out what it termed a "massive strike" targeting Islamic State objectives in Syria, subsequent to an ambush resulted in the deaths of two American soldiers and a civilian interpreter in Palmyra.
The UN reports Islamic State still has between 5,000 and 7,000 fighters in both countries.
