For those interested in the engineering side of the scandal, phase 2 is amazing listening. The amount of detail the enquiry goes into is incredible. The number of failings across the construction industry with this project from architecture to fire consultants to insulation providers is shocking, but despite this you can also see why those failings occured at the time. The enquirers are knowledgeable and ask extremely probing questions, you can almost hear witnesses squirm.
Phase 1 is worth listening to part of, it's all about what happened on the night, the fire service response and failings, call center communication, broken lifts, inadequate equipment and more. However, it is very heavy and depressing listening, and quite repetitive (Phase 1 the podcast was done each day of the enquiry, phase 2 is done weekly).
One suspicion I have is that these companies may rebrand and continue to operate under different names.
What I wonder as a result is: when future evaluation processes take place, would decision-makers make the connection to formerly-operating-as company names?
I think and hope that the processes are thorough enough to uncover simple avoidance techniques like that, but I also think it's wise not to assume that the process is foolproof.
(I'd also wonder whether many web search engines currently perform this kind of second-order entity name resolution automatically)
Re rebranding I think the industry would be aware enough. Despite the tests having been frauded previously, they would need to be redone under new company names at great expense, fraudulently or not. The more likely course I suspect is companies rebranding existing products and claiming new chemical formulas. (As was already done by Celotex: https://www.bdonline.co.uk/insulation-used-on-grenfell-refur...)
The rebranding question is still a bit of a question to me, even if industry will remember and if there are dis-incentives around it (i.e. the product line re-testing you mention, which might be still be a worthwhile dodge depending on the expected reputation cost - it probably affects hiring and job retention and various other things as well as industry perception and sales).