More ambulances are howling outside in the streets and the mobile networks are toppling under the load at the moment. Sky reports:

An explosion has "ripped a bus apart" just minutes after a number of blasts on London's Underground.

Scotland Yard has confirmed there has been an explosion on a bus in Tavistock Place. Union sources claim there have been reports of blasts on three different buses.

Witness Belinda Seabrook said she saw an explosion rip though a bus as it approached Russell Square.

"I was on the bus in front and heard an incredible bang. I turned round and half the double decker bus was in the air," she said.

More at:

• Financial Times: "The Metropolitan Police also confirmed reports of explosions on three buses, one of which happened in Tavistock Square just minutes after the blasts on the Underground."
• Londonist

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