Three buses have now blown up and there are a lot of casualties. Phone networks are jammed and it's pretty much impossible to get in touch with people. Bloody ridiuclous, you're right up at the top of a building, look outside and you can't see any signs of anything being wrong: people strolling around, cars dragging through the roads, London Eye still turning.

This is ridiculously weird. I've got a horrible cold feeling running through me.