A September 11 style attack could not occur in London, Ken Livingstone claimed yesterday.

The Capital's mayor said that although there is a threat from al Qaeda, it was only a "bit worse" than that which was once posed by the IRA.

He told the BBC's Breakfast with Frost: "The danger comes from two or three disaffected men doing something more like a car bomb."

Meanwhile civil rights group Liberty has condemned the "cruel and chaotic" way 10 terror suspects were released into the community last week.