Amazing how a city's mood can go from the highest of highs to the lowest of lows in less than 24 hours.
First hint I got that something was up this morning was a Fire Investigation van belting past me at high speed on the A13 at just after 9am.
It's been a fairly mad day - have had calls or messages from both brothers in Plymouth, my cousin in the British Virgin Islands, and a colleague on holiday in New Zealand.
Canary Wharf is deserted - no sign of suicide bombers, shot or otherwise, but they've closed the complex to traffic, and entrance to the shopping centre is via one (monitored) door only. Found myself humming The Specials as I crossed the road...
Hello, mobile phone reception is coming back - first time in about three hours. Suspect the firm may need to re-think its policy of keeping people informed via Blackberry and SMS in a disaster situation.
Tim Worstall is keeping a running log of events here if you want more information.