RAF Typhoon fighter aircraft have operated alongside France's air force in a coordinated attack on an hidden munitions depot in Syria operated by the IS group, per a report from the UK's MoD.
The location, identified by reconnaissance, was thought to be containing munitions and bombs, the release indicated, and was located in hills just north of the ancient city of Palmyra in Syria's central region.
"Our fighter planes utilized laser-guided Paveway IV weapons to hit a series of entry passages leading to the site... initial indications suggest the target was engaged successfully," the ministry announced.
There was no sign of any civilian casualties in the attack conducted Saturday night and all the aircraft returned safely, the MoD added.
The British jets were supported by a Voyager tanker plane.
Daesh - referred to as the so-called Islamic State - imposed jihadist rule over large swathes of both Syria and Iraq until 2019.
"This action demonstrates the UK's leading role, and commitment to work closely with our partners, to eradicate any resurgence of IS and their harmful and extremist ideologies in the area," the British Defence Secretary the minister said.
UK warplanes have performed patrols over Syrian airspace to "prevent any attempted resurgence" of Islamic State subsequent to its routing at the climactic battle in Baghuz in the year 2019, the ministry said.
"I must thank all the members of our armed forces participating in this mission for their skill and their bravery," he said. "They were among numerous British personnel on duty over Christmas and New Year. This mission, to eliminate militants who endanger our security, demonstrates how British military are always on standby, throughout the year, protecting the UK at home and strong abroad."
Last December, the US military conducted what it described as a "major assault" against Islamic State objectives in Syria, after an ambush resulted in the deaths of two US troops and a local interpreter in Palmyra.
The UN reports Daesh still has roughly 5-7 thousand fighters in Syria and Iraq.
