This week the Inquiry turned its attention to how building regulations were set and combustible materials tested and certified. Lawyers for the bereaved, survivors, and residents accused the government of concealing crucial information from previous fires, and industry bodies of knowingly approving unsafe building materials. Barry Turner, the former Director of Technical Policy at the Local Authority Building Control (LABC), agreed that his organisation’s close relationship with insulation manufacturer, Kingspan, affected their response when questions were raised about the fire performance of Kingspan’s K15 insulation. Presenter: Kate Lamble Producers: Sharon Hemans, Nathan Gower Researcher: Ben Henderson Studio Mix: Gareth Jones Editor: Hugh Levinson