The British Royal Air Force has used Brimstone missiles against ISIS in Syria for the first time on Sunday as four Brimstone missiles were deployed on two missions. One missile was used near Raqqa, targeting an ISIS supply truck, and three missiles were used in an attack on the Omar oilfield.

Spokeswoman for Prime Minister, David Cameron, said: “These will all have been focused on either targeting ISIS’s resources or targeting their terrorists who are seeking to destabilize Iraq, Syria and threatening other countries.”

“This is part of the ongoing operation and work we are doing with coalition partners to defeat ISIS in Iraq and Syria and we’ve always been clear that that’s going to take time, it’s going to require patience and persistence, but it reflects the fact that where we identify targets and an ability to strike them we will do all that we can to tackle ISIS”, she added.

The attack came hours after the RAF dropped four Pave way missiles on a tunnel complex, also near Raqqa, and a Reaper drone used a Hellfire missile against a terrorist stronghold in the same area.

The Defense Secretary, Michael Fallon, said: “Britain is playing a key role in the fight against ISIS whether helping Iraqi ground forces retake Ramadi or by striking targets near its Raqqa heartland.”