RAF Typhoon FGR4s have conducted a mission with French warplanes in a combined operation on an hidden munitions depot in Syrian territory employed by the IS group, according to the British defence ministry.
The location, pinpointed through reconnaissance, was believed to be housing weapons and explosive materials, the announcement noted, and was situated in mountainous terrain just to the north of the historic site of Palmyra in Syria's central region.
"Our fighter planes utilized Paveway IV guided bombs to target a number of entry passages leading to the facility... initial indications are that the objective was successfully hit," the ministry announced.
There was no indication of any civilian casualties in the attack on Saturday evening and every plane involved made a safe return, the defence officials confirmed.
The British jets were supported by a Voyager tanker plane.
Daesh - referred to as ISIS - imposed militant control over significant areas in both Syria and Iraq until 2019.
"This action shows British leadership, and commitment to stand shoulder to shoulder with allied nations, to stamp out any revival of IS and their harmful and extremist ideologies in the region," Britain's Defence Chief the Defence Secretary stated.
UK warplanes have conducted overwatch operations over Syria to "forestall any attempted resurgence" of IS following its military defeat at the battle of Baghuz in 2019, the authorities noted.
"I must thank the personnel of the UK armed forces participating in this strike for their professionalism and their bravery," the Defence Secretary added. "They were part of a great many British personnel on duty over the festive period. This mission, to take out terrorist threats who endanger our security, shows how British military are prepared to act, all year round, keeping Britain secure within its borders and influential overseas."
During December, the United States armed forces carried out what it termed a "massive strike" against Daesh sites in the country, subsequent to an ambush killed two US servicemembers and a civilian interpreter in Palmyra.
The UN says Islamic State still maintains roughly 5-7 thousand fighters in both countries.