§ Mr. Paul Marsden
To ask the Secretary of State for the Home Department which individuals are being detained, where and for what reasons, under Part 4 of the Anti-Terrorism, Crime and Security Act 2001. 
§ Mr. Blunkett
11 people have been detained to date using powers in Part 4 of the Anti-terrorism, Crime and Security Act 2001. Of those detained, two have voluntarily left the United Kingdom; the other nine remain in detention. It is long standing practice not to discuss individual cases or the immigration status of individuals, including their place of detention, unless they themselves first choose to do so.