It's chaos in London right now. They're not telling us much. First we hear there are 6 bombs gone off, now 7, but only 4 have been confirmed as bombs. They've blow up at least 5 underground stations and one bus.

Al Quada (spelling) group has claimed responsibility but it's not been confirmed.

They say hundreds have been injured, some seriously, and others still trapped in the stations in Kings Cross. How many dead, we don't know, and won't for a while.

This is apparently a very well organized and carried out terrorist attack on the public transport system, which has been a threat for a long time since Iraq War.

They have sealed off Buckingham Palace. Tony Blair is going to London from Edinburgh and has made a speech. All emergency services are at the scene and the rescue operation is going with success.

Some really disturbing scenes.