This week, as we passed the fifth anniversary of the Grenfell Tower fire, two expert witnesses levelled a series of fierce criticisms at the building safety regime. José Torero, head of the civil engineering department at a London university, described the competence levels among fire safety professionals as “extremely poor” and called for the Stay Put strategy to be abandoned. And Luke Bisby, professor of fire and structures at Edinburgh University, told the Inquiry, that he was “incredulous” at the misuse of fire tests by a cladding firm, and said there was a “significant problem” with the level of competence of fire safety professionals. Presenter: Kate Lamble Producers: Sharon Hemans and Kristiina Cooper Researcher: Marcia Veiga Sound Engineer: Gareth Jones Editor: Hugh Levinson