http://www.guardian.co.uk/terrorism/...944351,00.html

MI5 has identified 30 major terrorist plots being planned in Britain and is targeting more than 1,600 individuals actively engaged in promoting attacks here and abroad, Dame Eliza Manningham-Buller, the head of the agency, warns today.

The 30 plots are the most serious of many more planned by some 200 British-based "networks" involved in terrorism, she said in a speech seen by the Guardian. In a gloomy assessment of the home-grown terrorist threat, MI5 says most of those involved are British-born, and most are connected with al-Qaida.