RAF Typhoon jets have conducted a mission with France's air force in a coordinated attack targeting an hidden munitions depot in Syria operated by the Islamic State group (IS), according to the UK's MoD.
The location, identified by intelligence, was believed to be containing munitions and bombs, the announcement noted, and was located in hills just above the ancient city of Palmyra in central Syria.
"Our aircraft used laser-guided Paveway IV weapons to strike a series of entry passages down to the depot... preliminary assessments are that the strike was effective," the ministry announced.
There was no indication of any harm to civilians in the strike late on Saturday and every plane involved returned safely, the defence officials confirmed.
The British jets were backed up by a Voyager refuelling tanker.
The Islamic State group - also known as Daesh - imposed extremist governance over parts of Iraq and Syria prior to its 2019 collapse.
"This operation demonstrates British leadership, and commitment to work closely with allied nations, to eradicate any resurgence of IS and their violent and radical beliefs in the Middle East," the British Defence Secretary the minister remarked.
RAF aircraft have carried out patrols over Syria to "forestall any attempted resurgence" of IS after its defeat at the climactic battle in Baghuz in 2019, the authorities noted.
"I must thank every member of British forces who took part in this mission for their skill and their bravery," the Defence Secretary added. "They were part of a great many British troops on duty over the holidays. This action, to take out dangerous terrorists who endanger our security, shows how our armed forces are ready to step up, continuously, keeping Britain secure at home and powerful internationally."
In December, the US military executed what it termed a "major assault" against Islamic State objectives in the country, subsequent to an attack claimed the lives of two US servicemembers and a civilian linguist in Palmyra.
The UN reports Daesh still maintains between 5,000 and 7,000 militants in both countries.
