RAF Typhoon jets have conducted a mission with French warplanes in a joint strike on an subterranean weapons facility in Syrian territory employed by the IS group, per a report from the British defence ministry.
The site, pinpointed through reconnaissance, was thought to be containing munitions and bombs, the statement said, and was located in hills just north of the historic site of Palmyra in Syria's central region.
"The RAF jets employed precision-guided Paveway IV munitions to strike a series of access tunnels leading to the facility... preliminary assessments are that the target was engaged successfully," officials stated.
There was no sign of any civilian casualties in the operation on Saturday evening and each participating jet returned to base without incident, the ministry further stated.
The Typhoon fighters were supported by a Voyager refuelling tanker.
The Islamic State group - alternatively referred to as Daesh - enforced extremist governance over parts of Syria and Iraq prior to its 2019 collapse.
"This action shows British leadership, and commitment to stand shoulder to shoulder with allied nations, to stamp out any revival of IS and their harmful and extremist ideologies in the Middle East," Britain's Defence Chief the Defence Secretary said.
UK warplanes have conducted surveillance missions over Syria to "forestall any efforts to regroup" of IS subsequent to its routing at the climactic battle in Baghuz in the year 2019, the authorities noted.
"I must thank all the members of the UK armed forces involved in this mission for their professionalism and their courage," the Defence Secretary said. "They were part of numerous British troops on duty over Christmas and New Year. This operation, to eliminate dangerous terrorists who endanger our security, shows how our armed forces are always on standby, all year round, keeping Britain secure within its borders and strong abroad."
In December, the United States armed forces carried out what it called a "major assault" targeting IS targets in Syria, after an assault resulted in the deaths of two US troops and a local interpreter in the Palmyra area.
The UN estimates Islamic State still has between 5,000 and 7,000 combatants in Syria and Iraq.