Just to clear up confusion and ge the official version out on the board:
Tube evacuations: At-a-glance
Emergency services have been called to three London Underground stations amid reports of "incidents". The BBC News website is covering events as
they unfold (all times in BST):
1430: UK Government's emergency-response team Cobra meets at Downing Street, with Prime Minister Tony Blair and Foreign Secretary Jack Straw
1413: Prime Minister Tony Blair postpones a visit to a school in east London and a photocall with visiting Prime Minister John Howard of Australia, a
1411: Police cordon off University College Hospital, Reuters news agency reports.
1401: A White House spokesman says the US is "monitoring the situation closely".
1354: Police say they are not treating the evacuations as a "major incident yet".
1348: Westminster Underground station is evacuated.
1342: Police respond to reports of an explosion on a Number 26 bus in Hackney Road in east London.
1340: Ken Livingstone, the mayor of London, cancels an engagement because of the incident on the Underground, a spokeswoman says.
1325: London Underground announces services suspended on three lines, Hammersmith & City, Victoria and Northern.
1321: Fire service says smoke seen coming from Warren Street Tube station.
1320: The pound sterling falls against other currencies as word of the incidents hits the markets. The index of leading shares on London's stock
exchange also falls.
1311: Shepherd's Bush station on the Hammersmith and City line is evacuated.
1245: Ambulance services are called to the Warren Street station on the Northern and Victoria lines. The station is evacuated.
1238: Ambulance services are called to the Oval Underground station on the Northern Line. The station is evacuated.