Royal Air Force Typhoon jets have operated alongside France's air force in a coordinated attack targeting an underground arms cache in Syria used by the IS group, as stated by the British defence ministry.
The site, pinpointed through surveillance, was believed to be housing weapons and explosive materials, the statement said, and was positioned in hills just north of the ancient city of Palmyra in Syria's central region.
"Our fighter planes employed Paveway IV guided bombs to hit a number of entry passages providing entry to the facility... initial indications are that the strike was effective," officials stated.
There was no indication of any civilian impact in the strike on Saturday evening and all the aircraft returned safely, the defence officials confirmed.
The Typhoon FGR4s were assisted by a Voyager aerial refuelling aircraft.
IS - referred to as Daesh - enforced jihadist rule over large swathes of Iraq and Syria prior to its 2019 collapse.
"This action shows our UK leadership, and determination to stand shoulder to shoulder with our partners, to eliminate any resurgence of IS and their dangerous and violent ideologies in the area," Britain's Defence Chief the minister said.
RAF aircraft have performed patrols over Syrian airspace to "prevent any attempted comeback" of IS subsequent to its defeat at the climactic battle in Baghuz in 2019, the MoD reported.
"I extend gratitude to all the members of British forces participating in this operation for their skill and their courage," Healey said. "They were among numerous British personnel on duty over the holidays. This action, to remove terrorist threats who pose a risk to our way of life, demonstrates how UK forces are prepared to act, continuously, protecting the UK at home and strong abroad."
In December, the United States armed forces carried out what it called a "massive strike" on IS targets in the country, subsequent to an assault claimed the lives of two US troops and a civilian interpreter in Palmyra.
The U.N. says Daesh still has an estimated 5,000 to 7,000 fighters in both countries.
