RAF Typhoon jets have conducted a mission with French aircraft in a coordinated attack against an underground arms cache in Syrian territory used by the IS group, as stated by the UK Ministry of Defence.
The site, located using intelligence, was thought to be storing arms and explosives, the announcement noted, and was located in hills just to the north of the historic site of Palmyra in Syria's central region.
"The RAF jets used laser-guided Paveway IV weapons to strike a number of access tunnels down to the facility... early reports are that the target was engaged successfully," officials stated.
There was no sign of any civilian impact in the strike on Saturday evening and all the aircraft returned to base without incident, the ministry further stated.
The British jets were assisted by a Voyager aerial refuelling aircraft.
The Islamic State group - alternatively referred to as ISIS - established extremist governance over significant areas in Iraq and Syria until 2019.
"This operation demonstrates our UK leadership, and resolve to work closely with our allies, to stamp out any revival of Daesh and their harmful and extremist ideologies in the region," Britain's Defence Chief John Healey remarked.
RAF aircraft have carried out surveillance missions over Syrian airspace to "forestall any efforts to regroup" of the group subsequent to its routing at the Baghuz confrontation in the year 2019, the MoD reported.
"I want to thank all the members of British forces who took part in this strike for their expertise and their valour," Healey added. "They were part of a great many British troops stationed over the holidays. This mission, to eliminate militants who threaten our security, highlights how British military are prepared to act, continuously, protecting the UK within its borders and influential overseas."
In December, the United States armed forces carried out what it called a "major assault" on 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 boasts an estimated 5,000 to 7,000 militants in Syria and Iraq.