The Building Research Establishment (BRE) received a “significant source of revenue” by producing desktop studies for combustible Kingspan insulation used on Grenfell Tower, the inquiry into the 2017 fire has heard.

Tom Lennon, a consultant at the testing body, claimed the studies could be a “huge source of income” for the BRE in a 2015 email.

Desktop studies take the results of full-scale fire tests on cladding systems and model variations to the specification to demonstrate equivalent fire performance.

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