Mark's OK. I've never wanted to read a website update more. Thank fuck.

Six blasts. Train crashes, two buses blown up, two confirmed dead. They won't be the last.

BBC sources that monitor Al Quaeda are saying they did it (that's breaking news by the way. I'm typing as I hear it).

I've been saying for ages that we don't want to wait until it happens to us to do something about terrorism. I'm sure the security services haven't been sitting on their arses, but I can't wait to hear about the reasons they missed this one.

I've heard one commentator say that with everyone up in Ediburgh, you wouldn't expect something to happen in London. How naive can you get? They caught us with our pants down.

I know it's shock, but all the eyewitness reports seem quite sanguine. Tony Blair's going to say something at midday. More blogging after that maybe.