The enquiry has started, opening with a minute's silence.
http://www.bbc.co.uk/news/uk-41262914
Sir Martin Moore-Bick said he would not shrink away from making recommendations that could lead to prosecutions.
The inquiry cannot undo any of that, but it can and will provide answers to how a disaster of this kind could happen in 21st Century London.
Sir Martin said the inquiry would be split into two phases - with the first examining how the blaze developed and the second looking at how the building became so exposed to the risk of a major fire.
He said there was an "urgent need" to conduct phase one to find out what parts of the tower's design and construction played a role in allowing the disaster to happen.
"That's important because if there are similar defects in other high-rise buildings, steps must be taken quickly to ensure those who live in them are kept safe."
Sir Martin told the hearing he recognised the "great sense of anger and betrayal" felt by those affected by the blaze and would examine evidence "calmly and rationally".
But he rejected calls from survivors to appoint a person from the Grenfell community to the inquiry panel, saying it would "risk undermining impartiality".
http://www.bbc.co.uk/news/uk-41262914