Key revelations Where will evidence lead and who will be blamed?

A web of blame spanning from corporate headquarters in the US and France to elected chambers in Kensington and Westminster is set to be exposed next week when the Grenfell Tower public inquiry delivers the first official verdict.

- Robert Booth

The report, distilled from 400 days of evidence and more than 300,000 documents, will finally be ready for public release on Wednesday.

The inquiry is also undertaking the duties of a coroner and so Sir Martin Moore-Bick's report will detail the final painful hours of the residents of the tower who had sought safety in vain and died trapped. They include 12-year-old Jessica Urbano Ramirez, from flat 176 on the 20th floor, whose mother and sister were out when the fire began. She was among many who died sheltering in the top-floor flat of Raymond "Moses" Bernard.

On the same floor, Rania Ibrahim and her infant daughters died with Gary Maunders, Fathia Ali Ahmed Elsanousi, a retired schoolteacher and her adult daughter Isra Ibrahim. Elsanousi's adult son Abufras Mohamed Ibrahim fell from the tower, hitting the entrance canopy. Hesham Rahman, 57, was among 15 disabled residents who died. Gloria Trevisan, 26, an Italian architect, called her mother and said: "I can't believe its ending like this." She died with her partner, Marco Gottardi.

When this second phase of the inquiry opened Richard Millett KC, the lead counsel to the inquiry, said the statements made by the various parties involved in the refurbishment amounted to "a merry-go-round of buckpassing". But the inquiry revealed a mountain of evidence.

The multinationals

A French subsidiary of Arconic, a US industrial company, sold the highly combustible cladding panels that were the main cause of fire's spread. It did so despite evidence showing it knew two years before the disaster they were dangerous.

In 2010, Claude Wehrle, the head of technical sales support at Arconic, told a sales colleague the aluminium composite material (ACM) panels were combustible when formed into a cassette, as they were at Grenfell. He added: "We have to keep [this] VERY CONFIDENTIAL!!!!" That was not the first warning.