An hour-by-hour summary of events on the day of the London bombings, Thursday 7 July 2005.
8.49am - Reports of an explosion on the London Underground on the Metropolitan Line. 9.15am - Emergency services called to Liverpool Street Station. 9.33am - All London Underground trains stopped 9.33am - Another 'incident' is reported at Edgware Road station. 10.14am - Another explosion reported on a bus in Tavistock Place, in central London. 10.21 - Police confirm there have been "multiple explosions" in London. 11.08am - All buses in Central London stopped. 11.29am - Head of the Metropolitan Police confirms six blasts have hit London's transport system. 11.40am - Two people confirmed dead at Aldgate Station. 12.00am - Prime Minister Tony Blair announces the blasts are thought to be terrorist attacks. 12.14pm - Police confirm seven blasts. Six tube stations were hit; Edgware Road, King's Cross, Liverpool Street, Moorgate and Aldgate East. A bus was destroyed in Tavistock Square. 12.57pm - Home Secretary Charles Clarke tells the House Of Commons that there were at least four explosions. 1.13pm - Mayor of London, Ken Livingstone, says the city has been the target of a "cowardly terrorist attack". 1.25pm - Prime Minister Tony Blair boards a helicopter to leave the G8 Summit in Scotland and return briefly to London. 1.33pm - US President George Bush makes a speech in Scotland condemning the attacks, and says they show the war on terror must continue. 1.44pm - The Archbishop of Canterbury, Dr Rowan Williams, says the blasts are appalling. He calls for all religious leaders to work together. 2.18pm - A Transport for London spokeswoman says the bus hit by the explosion was a number 30, travelling from Hackney to Marble Arch. 3.35pm - Police confirm that at least 33 people were killed in the four explosions. 3.45pm - The ambulance service says it has treated 45 people for serious or critical injuries and a further 300 for minor injuries. 4.35pm - It is announced that the Union Jack flag above Buckingham Palace is being lowered to half-mast as a mark of respect to the dead and injured. 5.30pm - Prime Minister Tony Blair promises there will be the "most intense police and security service action to make sure we bring those responsible to justice". 6.30pm - Police say the total number of casualties was 700 and, of those, 300 were taken to hospital by ambulance. 7.40pm - Home Secretary Jack Straw says it looks like the attacks were carried out by al-Qaeda. 7.47pm - The Queen announces she will visit some of the people caught up in the attacks on Friday. 9.05pm - Tony Blair returns to the G8 summit in Scotland. 11.41pm - Police reopen most of the roads they closed in central London. But cordons remain in place in Woburn Place, Tavistock Place, Burton Street and Flaxman Terrace.