RAF Typhoon FGR4s have conducted a mission with French warplanes in a coordinated attack targeting an hidden munitions depot in Syrian territory used by the IS group, as stated by the UK's MoD.
The facility, located using intelligence, was thought to be containing munitions and bombs, the statement said, and was located in mountainous terrain just north of Palmyra in the heart of Syria.
"The RAF jets employed laser-guided Paveway IV weapons to strike a several access tunnels down to the depot... initial indications indicate the target was engaged successfully," the MoD said.
There was no sign of any civilian impact in the attack late on Saturday and all the aircraft returned to base without incident, the defence officials confirmed.
The Typhoon FGR4s were supported by a Voyager refuelling tanker.
Daesh - also known as ISIS - imposed militant control over large swathes of Syria and Iraq until 2019.
"This action shows British leadership, and determination to operate in unison with our partners, to eliminate any re-emergence of the terrorist group and their violent and radical beliefs in the area," the British Defence Secretary John Healey stated.
UK warplanes have carried out patrols over Syrian airspace to "forestall any attempted comeback" of IS subsequent to its routing at the Baghuz confrontation in 2019, the authorities noted.
"I extend gratitude to every member of British forces participating in this strike for their expertise and their valour," Healey added. "They were among numerous British personnel on duty over the festive period. This mission, to eliminate dangerous terrorists who endanger our safety, highlights how British military are ready to step up, all year round, protecting the UK domestically and powerful internationally."
During December, the US military carried out what it described as a "massive strike" on Daesh sites in Syria, after an attack killed two American soldiers and a civilian linguist in the Palmyra area.
The United Nations reports Daesh still maintains between 5,000 and 7,000 fighters in both countries.
