Not much I can give, London was rocked by four explosions (according to CNN accounts I heard, some gave as many as seven), the last death count I heard was "double digits" with 160 injured.
Update: The latest figures are 30 dead and 750 injured. An Islamic website claiming to be part of Al Quaida has claimed responsibility for the attacks. The BBC lists only four blasts, earlier reports of seven evidently incuded duplicates.
Coverage is available at the BBC, CNN, Fox News, Sky News, Slashdot, and many others (via Google News).
Edit: I can't believe I forgot the BBC.