RAF Typhoon fighter aircraft have operated alongside French aircraft in a joint strike targeting an underground arms cache in Syria used by the Islamic State group (IS), as stated by the British defence ministry.
The site, located using intelligence, was believed to be containing munitions and bombs, the statement said, and was located in hills just to the north of the historic site of Palmyra in the heart of Syria.
"Our aircraft employed precision-guided Paveway IV munitions to hit a number of access tunnels providing entry to the depot... initial indications indicate the objective was successfully hit," the ministry announced.
There was no indication of any harm to civilians in the strike conducted Saturday night and each participating jet returned to base without incident, the MoD added.
The British jets were assisted by a Voyager aerial refuelling aircraft.
Daesh - referred to as Daesh - enforced militant control over parts of Iraq and Syria until 2019.
"This operation demonstrates our UK leadership, and resolve to stand shoulder to shoulder with our partners, to eradicate any revival of Daesh and their violent and radical beliefs in the Middle East," UK Defence Secretary John Healey stated.
RAF aircraft have conducted patrols over Syria to "forestall any attempted comeback" of IS subsequent to its military defeat at the climactic battle in Baghuz in the year 2019, the MoD reported.
"I want to thank every member of our armed forces who took part in this operation for their professionalism and their courage," the Defence Secretary added. "They were among a great many British troops deployed over the festive period. This operation, to take out militants who threaten our safety, demonstrates how UK forces are always on standby, continuously, ensuring Britain's security at home and strong abroad."
Last December, the US military executed what it described as a "large-scale strike" against Daesh sites in Syria, subsequent to an assault claimed the lives of two American soldiers and a civilian interpreter in Palmyra.
The United Nations reports IS still maintains an estimated 5,000 to 7,000 fighters in Iraq and Syria.