Fire test for Grenfell foam cladding panels was rigged, admits ex-employee

Jonathan Roper says Celotex was dishonest' in second test of foam boards after they failed first one

Executives who sold combustible insulation for use on Grenfell Tower perpetrated a fraud on the market" by rigging a fire test and making misleading" claims about it, a public inquiry has heard.

Celotex, a subsidiary of the French construction materials company Saint-Gobain, behaved in a completely unethical" way, admitted Jonathan Roper, a former assistant product manager.