RAF Typhoon fighter aircraft have conducted a mission with French aircraft in a combined operation against an subterranean weapons facility in Syria operated by the Islamic State group (IS), per a report from the UK's MoD.
The site, located using intelligence, was assessed as storing arms and explosives, the statement said, and was situated in hills just to the north of Palmyra in Syria's central region.
"The RAF jets utilized Paveway IV guided bombs to target a series of approach shafts down to the site... early reports are that the target was engaged successfully," the ministry announced.
There was no evidence of any civilian impact in the strike late on Saturday and all the aircraft returned to base without incident, the MoD added.
The British jets were backed up by a Voyager tanker plane.
IS - also known as Daesh - enforced militant control over significant areas in Syria and Iraq prior to its 2019 collapse.
"This action shows our UK leadership, and resolve to operate in unison with our allies, to stamp out any re-emergence of IS and their harmful and extremist ideologies in the Middle East," Britain's Defence Chief the minister stated.
RAF aircraft have performed patrols over Syria to "forestall any efforts to regroup" of the group after its defeat at the climactic battle in Baghuz in the year 2019, the ministry said.
"I want to thank the personnel of our armed forces involved in this mission for their professionalism and their valour," the Defence Secretary commented. "Including them were thousands of British personnel on duty over the holidays. This operation, to remove dangerous terrorists who threaten our way of life, highlights how our armed forces are ready to step up, throughout the year, keeping Britain secure at home and influential overseas."
In December, the US military conducted what it termed a "major assault" targeting Daesh sites in Syria, subsequent to an attack claimed the lives of two US troops and a civilian interpreter in Palmyra.
The UN estimates Daesh still has an estimated 5,000 to 7,000 fighters in Syria and Iraq.