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The first phase of the public inquiry into the disaster heard expert evidence that a small kitchen fire broke out through a uPVC window fitting and ignited material attached to the building.

The Grenfell Inquiry heard the small kitchen fire broke out through a uPVC window fitting, igniting the cladding.

"Analysis indicates that a relatively minor, localised fire compromised the uPVC window fittings and ignited one of the flammable components of the cladding by direct flame/plume impingement," Prof Torero wrote.

There are signs of construction on the roof of the pub’s extension – plywood walls, uPVC windows and tarpaulin.

In the first episode of the show, Vincent's move into double glazing sees him raking in cash from selling uPVC windows - which were very cheap to make and could be sold for huge profits.