Royal Air Force Typhoon jets have operated alongside French warplanes in a combined operation against an hidden munitions depot in Syria used by the Islamic State group (IS), according to the British defence ministry.
The location, identified by reconnaissance, was believed to be containing munitions and bombs, the release indicated, and was positioned in mountains just to the north of Palmyra in central Syria.
"The RAF jets used precision-guided Paveway IV munitions to hit a series of entry passages down to the site... preliminary assessments are that the objective was successfully hit," the MoD said.
There was no evidence of any civilian impact in the strike on Saturday evening and all the aircraft returned safely, the ministry further stated.
The Typhoon FGR4s were assisted by a Voyager tanker plane.
The Islamic State group - referred to as Daesh - established militant control over significant areas in Syria and Iraq until 2019.
"This strike underscores the UK's leading role, and resolve to operate in unison with our partners, to eliminate any resurgence of IS and their violent and radical beliefs in the Middle East," UK Defence Secretary the Defence Secretary said.
UK warplanes have carried out overwatch operations over Syrian airspace to "prevent any attempted comeback" of Islamic State after its routing at the battle of Baghuz in 2019, the ministry said.
"I want to thank all the members of our armed forces participating in this strike for their expertise and their courage," Healey added. "They were part of a great many British troops deployed over Christmas and New Year. This operation, to remove terrorist threats who threaten our security, highlights how our armed forces are always on standby, throughout the year, protecting the UK within its borders and strong abroad."
Last December, the United States armed forces executed what it called a "massive strike" against Daesh sites in Syria, following an assault 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 combatants in both countries.