British Home Office staff are free to be members of the Islamic extremist group Hizb ut-Tahrir
Those working in the department responsible for immigration and homeland security do not even have to declare membership of the fanatical organisation, the Government admitted.
This means Home Secretary John Reid has no idea how many of his staff hold the group's radical views and he has no means of monitoring their activities.
The revelation - in a written parliamentary answer - comes after Home Office IT manager Abid Javaid, 41, was found to be a member of Hizb ut-Tahrir, which supports a worldwide Islamic state run under hardline Sharia law and has refused to condemn last year's London bombings.
Shadow Immigration Minister Damian Green said: "This is really shocking. It is a dereliction of duty for them not to find out how many more Hizb ut-Tahrir members are on the Home Office payroll."
Why Hizb ut Tahrir Should Be Banned
UK: The Menace Of The Islamists Of Hizb ut-Tahrir
Leading member of Muslim extremist group working at the Home Office
'I was forced to rob for Allah'