I draw your attention to this comment posted on this site today, re the room in which the CPO inquiry is being held:
"The room is more like a marketing suite for Arrowcroft and the Arena rather than an independent inquiry.
Each wall is covered in images of the Arena and buildings.
How can the inspector be seen to be independent in these circumstances?"
As an experienced FCA, auditor and forensic investigator I would remind the inquiry that it not just a case of "being independent" but being "seen to be independent".
Failure to observe both of the above ethical principles will irreparably damage the credibility of the inquiry.