British Air Force Typhoon fighter aircraft have operated alongside French aircraft in a joint strike on an underground arms cache in Syrian territory employed by the Daesh militant organization, as stated by the UK's MoD.
The location, pinpointed through reconnaissance, was assessed as storing arms and explosives, the release indicated, and was located in hills just north of the ancient city of Palmyra in central Syria.
"Our fighter planes used Paveway IV guided bombs to hit a several entry passages down to the facility... initial indications indicate the objective was successfully hit," the MoD said.
There was no indication of any civilian casualties in the strike late on Saturday and every plane involved made a safe return, the ministry further stated.
The British jets were assisted by a Voyager tanker plane.
The Islamic State group - also known as the so-called Islamic State - established jihadist rule over significant areas in Iraq and Syria until 2019.
"This action demonstrates British leadership, and resolve to operate in unison with our allies, to eradicate any re-emergence of Daesh and their dangerous and violent ideologies in the Middle East," Britain's Defence Chief the minister remarked.
UK warplanes have performed overwatch operations over Syrian airspace to "forestall any attempted comeback" of IS after its routing at the climactic battle in Baghuz in 2019, the ministry said.
"I must thank every member of our armed forces who took part in this operation for their professionalism and their courage," he said. "They were among a great many UK service members stationed over the festive period. This operation, to remove dangerous terrorists who endanger our security, shows how our armed forces are ready to step up, continuously, protecting the UK at home and strong abroad."
In December, the American forces executed what it termed a "massive strike" against Daesh sites in Syria, after an ambush claimed the lives of two American soldiers and a local interpreter in Palmyra.
The United Nations estimates IS still maintains roughly 5-7 thousand militants in both countries.