British Air Force Typhoon fighter aircraft have joined forces with France's air force in a combined operation against an hidden munitions depot in Syrian territory employed by the IS group, according to the UK's MoD.
The site, pinpointed through reconnaissance, was thought to be housing weapons and explosive materials, the release indicated, and was positioned in mountains just above Palmyra in central Syria.
"Our aircraft utilized laser-guided Paveway IV weapons to strike a number of access tunnels leading to the depot... early reports are that the strike was effective," officials stated.
There was no indication of any harm to civilians in the operation conducted Saturday night and each participating jet made a safe return, the ministry further stated.
The Typhoon fighters were supported by a Voyager refuelling tanker.
The Islamic State group - referred to as ISIS - established jihadist rule over large swathes of Syria and Iraq until 2019.
"This operation shows our UK leadership, and determination to operate in unison with allied nations, to eliminate any revival of the terrorist group and their harmful and extremist ideologies in the region," UK Defence Secretary the Defence Secretary stated.
British military aircraft have performed surveillance missions over Syria to "forestall any attempted resurgence" of the group following its defeat at the Baghuz confrontation in 2019, the ministry said.
"I must thank every member of our armed forces involved in this strike for their expertise and their valour," the Defence Secretary said. "They were among a great many British troops stationed over the holidays. This mission, to take out militants who threaten our way of life, demonstrates how UK forces are prepared to act, all year round, ensuring Britain's security domestically and powerful internationally."
In December, the United States armed forces carried out what it called a "massive strike" on Islamic State objectives in Syria, following an attack claimed the lives of two American soldiers and a civilian linguist in the Palmyra area.
The UN estimates IS still maintains an estimated 5,000 to 7,000 combatants in both countries.
