British Air Force Typhoon fighter aircraft have operated alongside France's air force in a combined operation targeting an subterranean weapons facility in Syria used by the Daesh militant organization, as stated by the UK's MoD.
The site, identified by reconnaissance, was thought to be containing munitions and bombs, the statement said, and was located in hills just above Palmyra in Syria's central region.
"Our aircraft used precision-guided Paveway IV munitions to target a number of access tunnels leading to the site... initial indications are that the strike was effective," officials stated.
There was no indication of any harm to civilians in the strike on Saturday evening and all the aircraft returned safely, the defence officials confirmed.
The Typhoon fighters were supported by a Voyager aerial refuelling aircraft.
IS - referred to as the so-called Islamic State - established jihadist rule over parts of both Syria and Iraq until 2019.
"This action demonstrates our UK leadership, and determination to work closely with allied nations, to eliminate any revival of IS and their harmful and extremist ideologies in the region," the British Defence Secretary the Defence Secretary stated.
UK warplanes have performed surveillance missions over Syrian airspace to "prevent any efforts to regroup" of Islamic State following its routing at the climactic battle in Baghuz in 2019, the MoD reported.
"I extend gratitude to the personnel of the UK armed forces involved in this strike for their skill and their courage," the Defence Secretary commented. "Including them were a great many British personnel stationed over Christmas and New Year. This operation, to eliminate terrorist threats who endanger our way of life, highlights how UK forces are ready to step up, continuously, protecting the UK within its borders and strong abroad."
In December, the US military conducted what it termed a "large-scale strike" against Daesh sites in Syria, after an attack claimed the lives of two US servicemembers and a civilian interpreter in Palmyra.
The U.N. estimates IS still maintains between 5,000 and 7,000 fighters in Iraq and Syria.