Islamic State video shows murder of five 'British spies'
Terror group publishes execution video as it threatens UK with new terror attacks and call David Cameron an 'imbecile'
Terrorists from Islamic State have released an execution video in which five alleged British spies are shot dead.
The men, who the terror group claim had passed information to coalition forces, are each shot in the head by masked executioners.
The ten and a half minute video, released on YouTube, also features a warning to Prime Minister, David Cameron, from a jihadist who speaks with a British accent.
In a chilling reminder of the terrorist dubbed 'Jihadi John', the fighter, who speaks with a London accent, says Britain will one day be invaded by Islamic State.
He dismisses Britain's decision to join in air strikes and says Mr Cameron is "foolish" and "arrogant" for thinking Isil will be defeated.
In the rant he says: "This is a message to David Cameron. Oh slave of the White House. Oh mule of the Jews. How strange it is that we find ourselves today hearing an insignificant leader like you challenge the might of the Islamic State.
"How strange it is that a leader of a small island threatens us with a handful of planes. One would have thought you would have learned the lessons of your pathetic master in Washington and his failed campaign against the Islamic State.
"But it seems that you just like your predecessors, Blair and Brown are just as arrogant and foolish.
"In fact David, you are more of an imbecile. Only an imbecile would dare to wage war against a land where the law of Allah reigns supreme and where the people live under the justice and security of Sharia. Only an imbecile would dare to anger a people who love death the way you love your life."
As he speaks, the five condemned men, who are dressed in orange jump suits, kneel on the ground in front of him and four other masked gunmen.
The alleged spies all deliver a 'confession' in Arabic, before they are killed.
Clutching and handgun, the British sounding fighter addresses the camera and says: "All British government. All people of Britain, know that today your citizenship is under out feet and that the Islamic State, our country, is here to stay and we will continue to wage jihad, break borders and one day invade your land, when you will be ruled by Sharia.
"But those of you who wish to continue fighting under the banner of Cameron on the minimum wage, we say to you to ask yourself, do you really think your government will care about you when you come into our hands?
"Or will they abandon you as they have abandoned these spies and those who came before them, because you will lose this war as you lost in Iraq and Afghanistan.
"But this time when you lose your children will inherit your defeat and remember you as the fools who thought you could defeat the Islamic State."
After shouting God is Great, he then opens fire on one of the alleged spies, shooting him in the head.
The man slumps forward before the other gunmen all open fire on their victims one by one.
At the end of the video a young child, with a British sounding accent appears to say: "We will kill the kuffar (non-believers) over there" as he points to the distance.