London Blasts

) was at the back of the top deck. Police are refusing to confirm that this was a suicide bomb, but that would seem to be the most likely scenario.

Update 11 (2:50pm): it now seems there were only four explosions: Liverpool St and Aldgate were the same blast (and Moorgate?), as were Kings Cross and Russell Square. That leaves one at Edgware Rd, and the bus blast.

Update 12 (3:25pm): Fatalities confirmed as as least 33: 21 from the Kings Cross blast, 7 from Aldgate, and 5 from Edgware Road – plus an unconfirmed number from the bus blast at Woburn Place.