Gardengeek you could be right about what happened with the cladding being installed.
However what made it burn like a chimney up the side of the building was the lack of fire stopping, or fire breaks. I believe some of the other higg rises with the same cladding have had fire breaks put in. I can't find where I read that but I mentioned it to dp who is a builder and ex fireproofer as he just can't comprehend that this was allowed to happen.
What probably happened is company A tendered for the work at say 12 million using rockwool and firestopping. Company B tendered for the work using the cheapest panels and cheaper labour. Company B got the contract.
Then during the actual installation the subbies fitting the cladding would have been given the spec. DP is absolutely adamant that they would have asked about fire stopping. Sometimes it is done as you go along. Sometimes it is done afterwards. But any fixer who has been in the trade for any length of time would have known to do the fire breaks. So someone would have spoken up.
The problem is though how can a replaceable fixer speak up against the foreman, site gaffers, architect, clerk of works etc without losing their jobs? I am surprised that the press haven't tracked any of them down yet and asked what was happening on that site.
DP is old enough and ugly enough and good enough at his job to raise these issues. But he was also a trained fireproofer back in the late 80s and 90s so has the knowledge and skill base to back up what he is saying. He has stated he wouldn't have done it. Not because he could see what would happen in tje future but because he would be worried about it failing building inspections and us not getting paid as it's always the fixer that loses their wages first.
Something stinks massively with that contract. Public contracts usually do.