RAF Typhoon fighter aircraft have operated alongside France's air force in a coordinated attack against an underground arms cache in Syria operated by the IS group, according to the UK's MoD.
The location, located using surveillance, was believed to be containing munitions and bombs, the release indicated, and was located in hills just above the ancient city of Palmyra in the heart of Syria.
"Our aircraft used laser-guided Paveway IV weapons to strike a several approach shafts down to the site... preliminary assessments are that the strike was effective," the ministry announced.
There was no evidence of any harm to civilians in the strike conducted Saturday night and all the aircraft returned safely, the ministry further stated.
The Typhoon fighters were assisted by a Voyager tanker plane.
Daesh - referred to as ISIS - enforced militant control over large swathes of both Syria and Iraq before its territorial defeat in 2019.
"This action shows British leadership, and determination to work closely with allied nations, to eradicate any resurgence of the terrorist group and their harmful and extremist ideologies in the Middle East," UK Defence Secretary John Healey said.
UK warplanes have performed surveillance missions over Syria to "forestall any attempted comeback" of IS subsequent to its defeat at the climactic battle in Baghuz in 2019, the ministry said.
"I extend gratitude to the personnel of British forces participating in this mission for their professionalism and their courage," the Defence Secretary said. "Including them were numerous British troops deployed over Christmas and New Year. This operation, to eliminate terrorist threats who endanger our safety, highlights how UK forces are prepared to act, continuously, keeping Britain secure at home and powerful internationally."
Last December, the United States armed forces executed what it termed a "massive strike" on IS targets in Syria, subsequent to an assault resulted in the deaths of two American soldiers and a local interpreter in the Palmyra area.
The U.N. estimates Daesh still boasts roughly 5-7 thousand fighters in Syria and Iraq.
