British Air Force Typhoon FGR4s have operated alongside France's air force in a joint strike on an underground arms cache in Syrian territory employed by the IS group, per a report from the British defence ministry.
The location, located using surveillance, was assessed as containing munitions and bombs, the announcement noted, and was located in mountains just above Palmyra in Syria's central region.
"The RAF jets utilized precision-guided Paveway IV munitions to strike a number of approach shafts providing entry to the facility... early reports suggest the target was engaged successfully," the ministry announced.
There was no evidence of any civilian casualties in the strike late on Saturday and every plane involved returned to base without incident, the defence officials confirmed.
The Typhoon fighters were assisted by a Voyager aerial refuelling aircraft.
The Islamic State group - also known as the so-called Islamic State - imposed militant control over large swathes of both Syria and Iraq prior to its 2019 collapse.
"This action shows British leadership, and resolve to stand shoulder to shoulder with our partners, to eradicate any revival of the terrorist group and their harmful and extremist ideologies in the region," the British Defence Secretary John Healey said.
UK warplanes have carried out overwatch operations over Syria to "deter any efforts to regroup" of IS subsequent to its defeat at the climactic battle in Baghuz in the year 2019, the authorities noted.
"I extend gratitude to every member of British forces involved in this strike for their expertise and their valour," he commented. "They were among a great many UK service members on duty over Christmas and New Year. This mission, to remove militants who threaten our way of life, highlights how British military are prepared to act, throughout the year, keeping Britain secure within its borders and influential overseas."
In December, the US military conducted what it described as a "massive strike" targeting IS targets in Syria, following an assault resulted in the deaths of two American soldiers and a civilian interpreter in Palmyra.
The UN reports Islamic State still maintains roughly 5-7 thousand militants in both countries.
