It has been seven years, one month and 27 days since the UK construction industry was changed forever by the fire at Grenfell Tower. That tragedy, which claimed the lives of 72 people, was quickly recognised at the time as a watershed in how we design and construct tall buildings. 

Since then, a new building safety regulator has been created, new rules rolled out to reduce the risk posed by fires, and the way the industry operates has been irreversibly changed. But we still do not know the definitive answer to the question: how did 3,000sq m of highly combustible cladding panels end up installed on a 24-storey residential tower?

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