Two-thirds of British Islamic terror suspects are from middle-class backgrounds and those who become suicide bombers are often highly educated, a classified MI5 document reveals

The paper also debunks the myth that Islamic terrorists and suicide bombers are loners and psychopaths. Instead, the security service says that 90% of them can be categorized as sociable and have a high number of friends. The 200-page document is called Radicalization Of Muslims In The United Kingdom – A Developed Understanding. Two-thirds of Islamic terrorists in Britain have criminal records. The study says that the mean age at which a Muslim becomes radicalized is 21.6 years, while anyone between the ages of 16 and 32 is regarded as vulnerable.