British Air Force Typhoon jets have operated alongside France's air force in a combined operation against an subterranean weapons facility in Syrian territory used by the IS group, per a report from the British defence ministry.
The location, located using reconnaissance, was assessed as containing munitions and bombs, the announcement noted, and was positioned in hills just to the north of the historic site of Palmyra in the heart of Syria.
"Our fighter planes used Paveway IV guided bombs to target a several approach shafts leading to the facility... preliminary assessments indicate the target was engaged successfully," the ministry announced.
There was no indication of any civilian casualties in the attack on Saturday evening and all the aircraft returned safely, the defence officials confirmed.
The Typhoon FGR4s were supported by a Voyager tanker plane.
The Islamic State group - also known as the so-called Islamic State - enforced jihadist rule over large swathes of Iraq and Syria prior to its 2019 collapse.
"This action underscores our UK leadership, and determination to operate in unison with our allies, to stamp out any resurgence of Daesh and their harmful and extremist ideologies in the area," Britain's Defence Chief John Healey stated.
UK warplanes have carried out surveillance missions over Syria to "forestall any attempted resurgence" of the group following its military defeat at the climactic battle in Baghuz in the year 2019, the authorities noted.
"I want to thank the personnel of our armed forces participating in this mission for their expertise and their bravery," the Defence Secretary commented. "They were among a great many British personnel on duty over the festive period. This operation, to remove militants who threaten our safety, demonstrates how UK forces are always on standby, all year round, ensuring Britain's security at home and strong abroad."
In December, the American forces carried out what it described as a "large-scale strike" targeting Islamic State objectives in the country, after an attack claimed the lives of two US servicemembers and a civilian linguist in the Palmyra area.
The UN says Daesh still has an estimated 5,000 to 7,000 fighters in both countries.
