British Air Force Typhoon FGR4s have operated alongside French aircraft in a joint strike on an underground arms cache in Syria employed by the Daesh militant organization, according to the UK Ministry of Defence.
The facility, pinpointed through reconnaissance, was thought to be containing munitions and bombs, the statement said, and was located in mountainous terrain just above the ancient city of Palmyra in Syria's central region.
"The RAF jets employed precision-guided Paveway IV munitions to strike a number of access tunnels down to the facility... early reports indicate the objective was successfully hit," the MoD said.
There was no sign of any civilian impact in the attack late on Saturday and every plane involved returned to base without incident, the defence officials confirmed.
The British jets were assisted by a Voyager tanker plane.
The Islamic State group - alternatively referred to as the so-called Islamic State - established jihadist rule over large swathes of Iraq and Syria before its territorial defeat in 2019.
"This strike demonstrates our UK leadership, and commitment to operate in unison with allied nations, to eliminate any revival of IS and their dangerous and violent ideologies in the area," Britain's Defence Chief the Defence Secretary remarked.
UK warplanes have conducted overwatch operations over Syria to "prevent any efforts to regroup" of Islamic State following its routing at the battle of Baghuz in the year 2019, the authorities noted.
"I want to thank every member of British forces involved in this strike for their skill and their valour," he commented. "They were part of numerous British troops deployed over the festive period. This operation, to remove terrorist threats who threaten our security, demonstrates how UK forces are prepared to act, all year round, ensuring Britain's security within its borders and influential overseas."
In December, the American forces carried out what it described as a "large-scale strike" against Daesh sites in Syria, following an assault killed two US servicemembers and a civilian linguist in Palmyra.
The UN says Islamic State still boasts roughly 5-7 thousand fighters in Syria and Iraq.
