Emergency teams have responded to the blasts
Explosions have rocked London, killing at least two and wounding scores in what Prime Minister Tony Blair said was an apparent terrorist attack coinciding with a meeting of Group of Eight leaders in Scotland.
Witnesses on Thursday saw the top was ripped off a double-decker bus near Russell Square close to King's Cross train terminal and the twisted wreckage of another in Tavistock Square nearby.
Several underground railway stations were also hit.
Two people were killed in the rush-hour explosion at Aldgate East underground station, police said.
"[We can] confirm there were two fatalities at Aldgate East
station this morning," a police spokeswoman said.
"It is reasonably clear that there have been a series of terrorist attacks in London," Blair said at the summit. He added that he would return to London in the "next couple of hours".
A doctor at Aldgate underground station in the east of the financial centre of the city said at least 90 people were wounded at that location.
Transit shut down
The entire underground system was shut down and major thoroughfares were blocked off by police and ambulance services.
London's police chief Ian Blair said there were indications of explosives at one of the blast sites.
"We are aware that one of the sites certainly does contain indications of explosives," he told Sky Television. "We are
concerned that this is a coordinated attack."
There was no immediate claim of responsibility.
Covered in blood
People were seen streaming out of one underground station covered with blood and soot. Passengers were evacuated from stations across the capital, many in shock and with their clothes ripped to shreds, witnesses said.