From what I've seen a major factor was the cladding manufacturer may have mislead architects regarding the validity of their testing and certification. https:/

From what I've seen a major factor was the cladding manufacturer may have mislead architects regarding the validity of their testing and certification. https://www.bbc.co.uk/news/uk-56101186 https://www.bbc.co.uk/news/uk-56101186 and https://www.bbc.co.uk/news/uk-56403431 https://www.bbc.co.uk/news/uk-56403431 > The BBA decided the evidence from the more successful European tests carried out on the Arconic cladding meant it "may be regarded" as having met the British standard. > > But the Board was never shown the class E ratings for the cassette version of the cladding and knew nothing about them until a BBC investigation in 2018. > > Arconic's president in France, Claude Schmidt, was forced to admit at the inquiry this would have "misled" anyone reading the certificate, including British architects.