RAF Typhoon FGR4s have operated alongside French aircraft in a joint strike targeting an underground arms cache in Syrian territory used by the IS group, per a report from the British defence ministry.
The facility, identified by intelligence, was assessed as containing munitions and bombs, the announcement noted, and was situated in mountains just north of Palmyra in the heart of Syria.
"Our aircraft used Paveway IV guided bombs to strike a series of entry passages providing entry to the facility... early reports indicate the target was engaged successfully," officials stated.
There was no sign of any civilian casualties in the strike late on Saturday and each participating jet made a safe return, the ministry further stated.
The British jets were assisted by a Voyager tanker plane.
Daesh - alternatively referred to as ISIS - enforced jihadist rule over parts of both Syria and Iraq prior to its 2019 collapse.
"This action demonstrates our UK leadership, and determination to stand shoulder to shoulder with allied nations, to stamp out any revival of the terrorist group and their dangerous and violent ideologies in the Middle East," UK Defence Secretary the minister remarked.
RAF aircraft have carried out overwatch operations over Syrian airspace to "deter any attempted comeback" of IS following its routing at the Baghuz confrontation in 2019, the MoD reported.
"I want to thank all the members of the UK armed forces involved in this strike for their skill and their valour," Healey said. "They were among a great many British troops deployed over the holidays. This operation, to eliminate terrorist threats who pose a risk to our way of life, demonstrates how UK forces are prepared to act, all year round, keeping Britain secure domestically and strong abroad."
In December, the United States armed forces executed what it described as a "massive strike" targeting Daesh sites in Syria, subsequent to an ambush claimed the lives of two US servicemembers and a civilian interpreter in Palmyra.
The UN estimates Islamic State still has an estimated 5,000 to 7,000 militants in both countries.
