(England Twitter)-Lady Justice Hallett will examine the work of the emergency and security services and is expected to formally record verdicts of unlawful killing.
Four suicide bombers killed 52 people and injured more than 700 on London's public transport system on 7 July 2005.
Relatives of the 52 innocent travellers killed in the July 7, 2005 London bombings have waited nearly six years for the inquest to give them answers about how their loved ones died and whether their deaths could have been prevented.
The bombers targeted Tube trains at Aldgate, Edgware Road and Russell Square and a double decker bus in Tavistock Square.
The remit of the inquests at the Royal Courts of Justice in London included investigating the emergency services' response on the day and considering whether MI5 could have prevented the attacks.
Lady Justice Hallett has also been urged to consider whether London Fire Brigade should give firefighters more discretion in deciding whether it is safe to proceed to an incident after protocols delayed some from going down to the bombed trains.
Court 73 at the Royal Courts of Justice in London will be packed with bereaved relatives, survivors and lawyers for the end of the inquest, which began in October and heard oral testimony from 309 witnesses before closing its evidence sessions in March.
She decided the inquest should only cover the deaths of the 52 innocent victims of the attacks.
A separate inquest for the four bombers could still be held in the future and the coroner may make a ruling on this when she presents her findings.
