Celotex has admitted “unacceptable conduct” over the way it described its insulation in its marketing – but insisted this had no bearing on the decision of others to use it on Grenfell Tower.

The inquiry heard that in 2014 the materials firm added other products to a BRE test of its cladding system to show that its RS5000 product, which was subsequently used on Grenfell Tower, was safe for use on tall buildings.