A cache of documents containing the details of 22,000 ISIS recruits have been leaked and contains names of more than 1,500 Britons in it. A Syrian news website published the highly crucial documents, which are mainly ISIS recruitment forms that contains information on the recruits including their names, addresses, phone numbers hometowns, nationalities and birth dates.

Khalid Mahmood, a Birmingham MP, said that the radicalisation of British youth has grown rapidly in the recent years and have become a more serious problem than was previously thought. He added that the figure is much higher that ACPO anti-terrorism chief Sir Peter Fahy’s estimate of 500.

“I imagine 1,500 certainly would be the lower end. If you look across the whole of the country, there’s been a number of people going across,” the Skynews quoted Mahmood as saying. “Originally you had the British Syrians settled here who wanted to go back and play a part, then you had the Kurdish community, then almost two years ago you had the young British Muslim community going across – so if you add all that up you’ve got serious figures that we need to look at. Those will come back – certainly more than we are saying at the moment – and we do need to look at that.”

He added, “Some of them go out there for nine months, some go out there for a year, some will just go out for six months or so. So we need to look at exactly how this is happening, what our border controls are like and we really need to bolster those border controls in order to ensure that we see the people coming through and deal with them.”

The Independent reported that the list contains names which have already come to the forefront due to a number of reasons, like Britons Abdel Bary, Junaid Hussain, Reyaad Khan. The new recruits were also asked to choose whether they would like to join as suicide bombers. They were even required to provide previous experience in extremism.