Royal Air Force Typhoon fighter aircraft have joined forces with French warplanes in a coordinated attack on an hidden munitions depot in Syria employed by the IS group, per a report from the British defence ministry.
The site, identified by reconnaissance, was thought to be storing arms and explosives, the statement said, and was positioned in mountainous terrain just to the north of Palmyra in the heart of Syria.
"Our aircraft used laser-guided Paveway IV weapons to strike a several entry passages down to the facility... preliminary assessments suggest the target was engaged successfully," the ministry announced.
There was no evidence of any civilian casualties in the operation on Saturday evening and each participating jet made a safe return, the MoD added.
The British jets were supported by a Voyager tanker plane.
The Islamic State group - also known as Daesh - established militant control over large swathes of both Syria and Iraq before its territorial defeat in 2019.
"This action demonstrates our UK leadership, and commitment to operate in unison with our allies, to stamp out any revival of the terrorist group and their harmful and extremist ideologies in the region," UK Defence Secretary John Healey remarked.
RAF aircraft have carried out surveillance missions over Syrian airspace to "forestall any attempted comeback" of Islamic State subsequent to its defeat at the climactic battle in Baghuz in the year 2019, the MoD reported.
"I must thank the personnel of the UK armed forces who took part in this mission for their skill and their bravery," Healey said. "They were part of numerous British troops deployed over the holidays. This mission, to take out militants who pose a risk to our way of life, demonstrates how our armed forces are ready to step up, throughout the year, protecting the UK at home and powerful internationally."
Last December, the United States armed forces carried out what it called a "massive strike" against Daesh sites in the country, following an attack resulted in the deaths of two American soldiers and a civilian interpreter in the Palmyra area.
The UN reports IS still has an estimated 5,000 to 7,000 militants in both countries.