Is a Panel member neutral on Trans issues if they consult and manage Trans matters on behalf of one of NIs biggest Unions?
Realistically, we've all got our own political leanings and issues that we support. Which is fine. However, what we would expect in the interests of transparency of due process, is that interests or prejudices etc., are declared if relevant.
I might dislike the DUP, for instance, but as a panel member I'd hope that I could put that aside if someone who was a party member was before me on an unfair dismissal claim.
Having said that, I would think it pertinent to advise the Judge asap, if having realised this person was a DUP member, I had previously liked a social media post with Fuck the DUP and my own comment of Best Picture of the Day.
Not to do so would definitely raise questions about my integrity.
Edited to add:
So I think it's perfectly fine to have trade union responsibility for a group of members, such as members who happen to be trans. What isn't fine is if a panel member appears to be unable to act fairly as a panel member and allows personal bias to take over.