New ‘Jihadi John’ was interviewed by Dutch tv in 2014

The man in the video calls Cameron a “slave of the White House” and “mule of the Jews”, and vows ISIS will establish Sharia law in Britain.

“How can someone on bail for terrorism-related offences travel to Syria?”

The latest ISIS terrorist to be dubbed “Jihadi John” has been tentatively identified as a British citizen who was once arrested in the United Kingdom on suspicion of giving aid and support to terrorism. Emwazi was understood to have been killed in Raqqa late past year in an airstrike which specifically targeted the Briton.

The father of Ms Grace Dare, a woman from London who left Britain to join ISIS and marry a militant, said he believed the boy was her son.

Two facial recognition experts have told Sky News they believe the masked killer is not Dhar.

It sounds like the plot of a low-budget, made-for-TV movie: A bouncy castle salesman disenchanted with life in East London converts to radical Islam, moves to war-torn Syria, and becomes the focus of a police investigation after he threatens the U.K.in a bloody execution video published online.

His sister, Konika, told the BBC this week that she was in a state of denial that this could be her brother but said the voice sounded familiar, although she was not entirely sure. “I mean, this is just an island I was born in”.

Before fleeing, Dhar sold inflatable bouncy castles for children’s events, the BBC reported.

‘I’ve seen what a democracy has to offer and quite frankly it is quite oppressive.

When asked if he felt British, he replied: “I identify myself as a Muslim. I am Muslim first, second and last”.

The voice and appearance of the masked militant shown in the new video was different from Emwazi, but he spoke in a clear English accent, waving a gun at the camera while criticizing Cameron. But by then, Dhar had already absconded with his wife and four children to France en route to Syria. From there, he managed to travel to Syria.

Yesterday it emerged that a letter from police reminding him of the need to hand over the passport by October 3 was not sent until more than a month later on November 7. The apparent security lapse has caused a political row in Britain with Home Secretary Theresa May under pressure to launch an inquiry into the circumstances of Dhar’s disappearance.

Prime Minister David Cameron has described the video as “desperate stuff” created to deflect from recent losses by Isis.

But she added: “The Prime Minister has spoken before and it remains his view that he will look at what action is necessary to protect British people in this country and to protect us from the threat posed by Daesh”.

“Because the guy who I knew was no more capable of it than you or I as far as I could tell”.