RAF Typhoon fighter aircraft have operated alongside French aircraft in a coordinated attack on an underground arms cache in Syrian territory employed by the IS group, according to the UK Ministry of Defence.
The location, pinpointed through reconnaissance, was believed to be containing munitions and bombs, the release indicated, and was positioned in mountains just north of Palmyra in central Syria.
"Our fighter planes utilized laser-guided Paveway IV weapons to strike a several approach shafts leading to the depot... initial indications suggest the strike was effective," the ministry announced.
There was no sign of any civilian impact in the attack conducted Saturday night and every plane involved returned to base without incident, the ministry further stated.
The British jets were backed up by a Voyager refuelling tanker.
Daesh - alternatively referred to as the so-called Islamic State - established extremist governance over parts of Iraq and Syria prior to its 2019 collapse.
"This action demonstrates our UK leadership, and commitment to stand shoulder to shoulder with our allies, to stamp out any resurgence of the terrorist group and their harmful and extremist ideologies in the area," Britain's Defence Chief the Defence Secretary said.
British military aircraft have carried out surveillance missions over Syria to "forestall any attempted comeback" of Islamic State after its defeat at the battle of Baghuz in 2019, the ministry said.
"I want to thank all the members of our armed forces participating in this operation for their skill and their courage," the Defence Secretary said. "Including them were thousands of British personnel on duty over the festive period. This operation, to take out terrorist threats who endanger our safety, highlights how British military are ready to step up, continuously, ensuring Britain's security at home and influential overseas."
Last December, the US military conducted what it called a "large-scale strike" against Islamic State objectives in the country, subsequent to an assault resulted in the deaths of two American soldiers and a local interpreter in Palmyra.
The United Nations estimates IS still boasts between 5,000 and 7,000 combatants in Syria and Iraq.
