How do I know? A biography has just been published (Damaged Goods: The Inside Story of Sir Philip Green, the Collapse of BHS and the Death of the High Street, by Oliver Shah). I haven't read it, but an article by the author in the Sunday Times gives the impression that his bullying behaviour is mentioned. Not all the sources will be subject to NDAs.

I don't regard the NDAs as "shady" in themselves. I can't be sure of course, but I fully expect these are a standard part of all Arcadia's settlement agreements and were not put in simply because of the nature of these particular allegations. This is standard practice (I signed one myself when I was made redundant, and my claim was on purely technical grounds rather than any allegations of misconduct). Of course, it is now being questioned whether NDAs are appropriate or should even be unlawful for allegations of this nature, but that is a different issue.

As for Hain's use of parliamentary privilege, I refer you to the comments of the Speaker of the House of Lords I quoted in my previous post.