This week, the Inquiry heard from Debbie Smith, a senior figure in the Building Research Establishment for more than 34 years. She failed to speak up at a meeting with the government two days after the Grenfell Tower fire about the “immediate and present risk to life” ACM panels on buildings over 18 metres presented. And there was a significant milestone, as Anthony Burd, a former senior civil servant, became the first government figure to appear.