NPR Streaming Audio, which is a little less US-Centric than say, CNN.
Charlie Stross has Two Nasty Thoughts.
As for myself, I have faith in the toughness and practicality of Londoners. Which does not diminish the tragedy in any way, but this isn't going to cripple that city.
As a personal aside, if this keeps up, I'm going to become superstitious about trips to Toronto.
ETA: via peake and brisingamen, london_070705 for updates.