Islamic State released a new propaganda video showing the execution of five British spies.

The video shows five executioners standing behind the kneeling prisoners while a masked gunmen says in British accent: ‘This is a message to David Cameron, slave of the White House, mule of the Jews.’

He described the Prime Minister as an ‘imbecile’, adding: ‘Your children will pay for your deeds.’

‘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 the 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 Islamic State.”

The video ends with a suspected British boy threatening the UK with new terror attacks saying: ‘We will kill kuffar [non believers] over there.’