Arconic continued selling the combustible ACM cladding installed on Grenfell Tower after its test report had been withdrawn because of the “cost implications” of removing it from the market, the inquiry has heard.

Former Arconic sales manager Deborah French made the admission to John Simmons, who worked for one of the firm’s client’s Simco, shortly after the tragic 2017 fire in a telephone conversation which Simmons secretly recorded.

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