Overall, while I find the evidence of those on the Board convincing, that they were kept in the dark or even actively misled by the executive, it doesn't answer the question about why, if that's the case, they didn't become suspicious, and then active, with all of the red flags fluttering in the breeze?
Case in point is Storey. By her own account she ended up becoming distanced from her ultimate boss, ShEx, she probably wasn't getting fully open information from her fellow Board members, and was being misled by the executive. What was she doing beyond being sat in a vital role, being clever and capable, but ultimately not doing anything in the critical areas of interest to the Inquiry?