On 7 July 2005, four suicide bombers with rucksacks full of explosives attacked central London, killing 52 people and injuring more than 770.
It was the worst single terrorist atrocity on British soil.
Three bombs went off just before 0850 BST on Tube trains near Aldgate and Edgware Road stations, and on another travelling between King's Cross and Russell Square.
There was a fourth and final explosion about an hour later on a double-decker bus in Tavistock Square, not far from King's Cross.
Inquests into the deaths of the 52 people who died that day began in October 2010 and are expected to last a number of months.
The hearings are looking at how they died, the emergency services' response, plans for dealing with such terrorist incidents and, critically, whether the bombers could have been stopped.
Evidence has included plans of the attacked tube carriages and double-decker bus, which show approximate locations of the bombers, those killed and the survivors. All locations are approximate and based on witness statements - some of which may conflict.
The inquests first heard evidence from the bombing on an eastbound Circle Line train between Liverpool Street and Aldgate, where Shehzad Tanweer, aged 22, detonated his device.
The explosion at the rear of the second carriage killed seven people.