RAF Typhoon jets have conducted a mission with French warplanes in a coordinated attack on an hidden munitions depot in Syria employed by the IS group, according to the UK Ministry of Defence.
The facility, pinpointed through surveillance, was believed to be storing arms and explosives, the statement said, and was situated in mountainous terrain just above Palmyra in central Syria.
"Our fighter planes utilized laser-guided Paveway IV weapons to target a number of access tunnels providing entry to the depot... early reports are that the strike was effective," officials stated.
There was no sign of any harm to civilians in the operation conducted Saturday night and all the aircraft returned safely, the MoD added.
The British jets were supported by a Voyager tanker plane.
IS - alternatively referred to as Daesh - imposed militant control over significant areas in both Syria and Iraq until 2019.
"This action shows the UK's leading role, and determination to operate in unison with our partners, to eradicate any revival of IS and their violent and radical beliefs in the area," the British Defence Secretary the minister remarked.
UK warplanes have carried out surveillance missions over Syria to "forestall any attempted comeback" of Islamic State following its defeat at the battle of Baghuz in 2019, the authorities noted.
"I extend gratitude to every member of British forces who took part in this operation for their professionalism and their courage," he added. "They were among numerous British troops stationed over the festive period. This mission, to take out terrorist threats who pose a risk to our way of life, demonstrates how our armed forces are always on standby, all year round, protecting the UK within its borders and strong abroad."
Last December, the US military conducted what it called a "large-scale strike" against IS targets in the country, following an attack killed two US servicemembers and a civilian linguist in Palmyra.
The United Nations estimates Islamic State still boasts roughly 5-7 thousand combatants in both countries.
