RAF Typhoon jets have operated alongside France's air force in a joint strike against an underground arms cache in Syria employed by the Islamic State group (IS), according to the UK's MoD.
The site, identified by intelligence, was assessed as storing arms and explosives, the announcement noted, and was positioned in hills just above Palmyra in Syria's central region.
"Our aircraft used precision-guided Paveway IV munitions to target a number of access tunnels leading to the site... preliminary assessments are that the strike was effective," officials stated.
There was no evidence of any civilian casualties in the attack conducted Saturday night and all the aircraft made a safe return, the defence officials confirmed.
The Typhoon FGR4s were assisted by a Voyager tanker plane.
Daesh - alternatively referred to as the so-called Islamic State - enforced extremist governance over large swathes of Syria and Iraq before its territorial defeat in 2019.
"This strike shows our UK leadership, and resolve to stand shoulder to shoulder with allied nations, to eradicate any revival of the terrorist group and their dangerous and violent ideologies in the area," Britain's Defence Chief the minister said.
UK warplanes have conducted patrols over Syria to "forestall any attempted resurgence" of IS after its defeat at the Baghuz confrontation in 2019, the ministry said.
"I want to thank every member of our armed forces who took part in this mission for their expertise and their courage," Healey added. "Including them were numerous British troops on duty over the festive period. This mission, to take out terrorist threats who threaten our security, demonstrates how our armed forces are prepared to act, all year round, keeping Britain secure at home and powerful internationally."
During December, the American forces executed what it termed a "massive strike" targeting Daesh sites in the country, subsequent to an assault killed two US servicemembers and a local interpreter in Palmyra.
The United Nations estimates Daesh still boasts between 5,000 and 7,000 fighters in both countries.
