A fire expert warned a building control body that the use of combustible materials on high-rise buildings in the years leading up to the Grenfell fire was “an accident waiting to happen”, the inquiry has heard.

Arup fire engineer Dr Barbara Lane, who is now an expert witness at the inquiry, made the warning to the National House Building Council (NHBC) in October 2014 – nearly three years before the disaster at the west London tower block.