IANAL, and we still have 10 days of evidence to hear. Plus the possibility now of having an additional respondent and more detriments added.
So it's really hard to say what might happen. But my feeling so far is:
The sexual harassment should be found in Peggie's favour. But employment tribunals have a history of using both the wrong law (only EQA 2010, ignoring Workplace H&S 1992) and the wrong comparator (woman instead of man) in this type of case. So this is the one she's most likely to lose.
Respondent 2 (Upton) harassment - seems clear to me, but it's a lot of little things that the panel.migh view and dismiss individually rather than taking as a whole. And it may depend on whether the application to examine his phone is granted. Should go Peggie's way but not guranteed yet.
New respondent 3 (consultant who sent inflammatory email) - claim not yet added or evidence heard. What we have heard so far doesn't look good for her.
Respondent 1 failure of process claims. Should be a slam dunk.for Peggie. They included all the wrong people, who had no experience, and totally failed to follow process over a ridiculous timeline. Reaction was totally OTT, based on nothing.