British Air Force Typhoon FGR4s have conducted a mission with France's air force in a joint strike targeting an underground arms cache in Syrian territory used by the Islamic State group (IS), according to the UK Ministry of Defence.
The site, located using reconnaissance, was assessed as containing munitions and bombs, the statement said, and was positioned in mountainous terrain just north of Palmyra in the heart of Syria.
"The RAF jets utilized laser-guided Paveway IV weapons to target a number of approach shafts leading to the facility... preliminary assessments indicate the target was engaged successfully," the MoD said.
There was no sign of any harm to civilians in the operation late on Saturday and each participating jet made a safe return, the defence officials confirmed.
The Typhoon FGR4s were assisted by a Voyager tanker plane.
IS - referred to as Daesh - enforced jihadist rule over parts of both Syria and Iraq prior to its 2019 collapse.
"This strike shows our UK leadership, and commitment to stand shoulder to shoulder with our allies, to eliminate any resurgence of Daesh and their harmful and extremist ideologies in the Middle East," UK Defence Secretary John Healey stated.
UK warplanes have conducted surveillance missions over Syrian airspace to "deter any attempted comeback" of the group following its military defeat at the Baghuz confrontation in the year 2019, the MoD reported.
"I extend gratitude to all the members of the UK armed forces who took part in this mission for their skill and their bravery," the Defence Secretary said. "They were part of numerous UK service members stationed over the festive period. This operation, to eliminate dangerous terrorists who pose a risk to our way of life, highlights how UK forces are always on standby, throughout the year, ensuring Britain's security domestically and powerful internationally."
During December, the American forces conducted what it termed a "large-scale strike" against Islamic State objectives in the country, subsequent to an assault killed two US servicemembers and a local interpreter in the Palmyra area.
The United Nations reports IS still boasts an estimated 5,000 to 7,000 fighters in Syria and Iraq.