RAF Typhoon FGR4s have operated alongside France's air force in a joint strike on an underground arms cache in Syrian territory operated by the Islamic State group (IS), per a report from the UK's MoD.
The facility, located using reconnaissance, was thought to be housing weapons and explosive materials, the statement said, and was positioned in mountains just to the north of the ancient city of Palmyra in the heart of Syria.
"The RAF jets utilized precision-guided Paveway IV munitions to strike a number of approach shafts leading to the facility... early reports are that the objective was successfully hit," the MoD said.
There was no sign of any harm to civilians in the attack conducted Saturday night and all the aircraft returned safely, the MoD added.
The British jets were assisted by a Voyager tanker plane.
IS - also known as ISIS - imposed militant control over parts of Iraq and Syria before its territorial defeat in 2019.
"This action shows the UK's leading role, and determination to work closely with our allies, to eradicate any resurgence of IS and their harmful and extremist ideologies in the Middle East," the British Defence Secretary the minister remarked.
UK warplanes have performed patrols over Syrian airspace to "prevent any attempted comeback" of the group after its military defeat at the climactic battle in Baghuz in 2019, the authorities noted.
"I want to thank all the members of the UK armed forces participating in this strike for their expertise and their valour," he added. "They were part of numerous British troops deployed over Christmas and New Year. This mission, to take out militants who pose a risk to our safety, highlights how UK forces are ready to step up, continuously, ensuring Britain's security domestically and influential overseas."
During December, the US military carried out what it described as a "major assault" on Daesh sites in the country, subsequent to an attack resulted in the deaths of two US troops and a civilian interpreter in Palmyra.
The United Nations reports Daesh still boasts roughly 5-7 thousand fighters in Iraq and Syria.
