Royal Air Force Typhoon fighter aircraft have conducted a mission with France's air force in a joint strike targeting an underground arms cache in Syrian territory used by the IS group, according to the British defence ministry.
The location, identified by surveillance, was assessed as storing arms and explosives, the release indicated, and was located in mountainous terrain just north of Palmyra in central Syria.
"Our aircraft employed precision-guided Paveway IV munitions to hit a series of entry passages down to the site... initial indications indicate the objective was successfully hit," officials stated.
There was no sign of any civilian casualties in the operation on Saturday evening and every plane involved returned to base without incident, the ministry further stated.
The British jets were supported by a Voyager refuelling tanker.
The Islamic State group - referred to as ISIS - imposed extremist governance over large swathes of Syria and Iraq prior to its 2019 collapse.
"This operation underscores the UK's leading role, and resolve to stand shoulder to shoulder with our partners, to eradicate any resurgence of IS and their dangerous and violent ideologies in the area," Britain's Defence Chief the Defence Secretary said.
UK warplanes have performed surveillance missions over Syria to "prevent any attempted comeback" of IS after its military defeat at the battle of Baghuz in 2019, the authorities noted.
"I must thank all the members of the UK armed forces participating in this strike for their expertise and their valour," Healey said. "They were part of a great many British personnel on duty over the holidays. This mission, to eliminate terrorist threats who threaten our security, shows how our armed forces are always on standby, all year round, keeping Britain secure at home and powerful internationally."
In December, the US military conducted what it called a "large-scale strike" targeting Islamic State objectives in the country, following an attack resulted in the deaths of two US servicemembers and a civilian linguist in the Palmyra area.
The United Nations says Islamic State still has roughly 5-7 thousand militants in Iraq and Syria.
