THE following is a timeline of the Series of explosions (all times GMT): 0751: Seven people are killed in an explosion on a Circle or Central line train 100 metres from Liverpool Street Underground station.

The blast happened near Moorgate, Liverpool Street and Aldgate stations.

0756: A total of 21 people are killed following a blast on the underground service close to Russell Square and King’s Cross stations.

0815: Emergency services called to London’s Liverpool Street Station following reports of an explosion.

0817: Five people are killed in an explosion at Edgware Road underground station. Police said a blast ripped through a carriage, a wall and into two other trains.

0824: British transport police say there are reports of one person suffering a life-threatening injury and several “walking wounded”.

0833: All London underground services are suspended after what the network says is a power fault across the network.

0833: Reports of “another incident at Edgware Road” station.

0840: British transport police say power surge incidents, some of them causing explosions, have occurred on the underground at Aldgate, Edgware Road, King’s Cross, Old Street and Russell Square stations.

0847: An unknown number of people die when an explosion tears through the back of the number 30 Hackney to Marble Arch bus. The blast happens at the junction of Woburn Square and Tavistock Place.

0900: The national power grid, which supplies power to the underground, confirms there have been no problems with its system.

0902: Scotland Yard says its officers are assisting with what has been termed a “major incident” and confirms there have been casualties.

0910: British Prime Minister Tony Blair is briefed on the chaos in the capital between meetings with heads of state at the G8 summit in Gleneagles.

0913: Union officials say they have been told there has been at least one explosive device on the underground.

0921: Scotland Yard confirms “multiple explosions” in London.

0923: British transport police confirm an explosion on a bus in Tavistock Square. —AFP