This week, senior civil servant Brian Martin continued giving evidence to the Inquiry. As the only person to testify with experience working for both the Ministry for Housing, Communities and Local Government and the Building Research Establishment, the Inquiry learnt about the intricacies and inadequacies of his role overseeing building regulations guidance. He conceded that he had underestimated the risks posed by cladding used on high-rise buildings like Grenfell Tower, and that he had lulled his peers into a false sense of security over the dangers. Presenter: Kate Lamble Producers: Sharon Hemans, Kristiina Cooper and Nathan Gower Researcher: Marcia Veiga Studio Mix: Gareth Jones Editor: Hugh Levinson