RAF Typhoon jets have operated alongside French aircraft in a joint strike against an underground arms cache in Syrian territory used by the IS group, per a report from the UK Ministry of Defence.
The site, identified by reconnaissance, was believed to be housing weapons and explosive materials, the release indicated, and was located in mountainous terrain just to the north of Palmyra in Syria's central region.
"Our fighter planes employed Paveway IV guided bombs to strike a series of access tunnels providing entry to the facility... initial indications indicate the objective was successfully hit," the ministry announced.
There was no indication of any civilian impact in the operation late on Saturday and every plane involved returned to base without incident, the MoD added.
The British jets were backed up by a Voyager tanker plane.
IS - also known as Daesh - established extremist governance over significant areas in both Syria and Iraq before its territorial defeat in 2019.
"This operation demonstrates our UK leadership, and resolve to stand shoulder to shoulder with our allies, to stamp out any resurgence of Daesh and their harmful and extremist ideologies in the area," Britain's Defence Chief the minister stated.
British military aircraft have conducted overwatch operations over Syria to "deter any efforts to regroup" of Islamic State following its routing at the Baghuz confrontation in the year 2019, the authorities noted.
"I must thank all the members of the UK armed forces participating in this strike for their skill and their valour," he said. "They were part of thousands of British personnel deployed over Christmas and New Year. This action, to remove dangerous terrorists who pose a risk to our security, demonstrates how our armed forces are prepared to act, throughout the year, keeping Britain secure domestically and influential overseas."
In December, the United States armed forces conducted what it described as a "large-scale strike" on Daesh sites in Syria, following an attack claimed the lives of two US troops and a local interpreter in Palmyra.
The United Nations says Daesh still maintains roughly 5-7 thousand militants in Iraq and Syria.
