A senior testing technician has blamed a string of apparent errors he made when testing insulation destined for Grenfell Tower on the testing hall being too busy, the inquiry has heard.

Former Building Research Establishment (BRE) burn hall manager Phil Clark told Wednesday’s hearing: “What you need to understand is that the burn hall was a very busy place. We could have 10 people in on any given day.”

The inquiry heard yesterday how Clark had apparently not noticed that a May 2014 fire test of a wall construction that contained manufacturer Celotex’s RS5000 insulation had cement panels of different thicknesses.

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