Assessors qualifications

My friend was recently assessed for his PIP f2f by a Mental Health professional....will this be relevant in the outcome, and can we use it if it goes to appeal?
Thanks in advance

You don't say what your friend was claiming on the basis of? If it's a mental health issue then yes maybe it will help. I was given an assessment by an OT who said he was a mh professional.....

Thank you Gary.
Sorry, I should have been more specific.
He was asked the usual questions about his physical disabilites, which are quite a few and affect his mobility, and the assessor asked him to do a series of movements ie bend from the waist, arms over head etc. He also suffers from very bad depression and social anxiety.
The thing that surprised us both was that she just glossed over the depression, asked if he was having counselling, has he ever tried to end his life and that was it.
He didnt get chance to say how debilitating it is, or how he panics about going to work or new places.
Left feeling a bit confused really.

Hi Ellen, thank you.
He's claiming for both physical and mental, but considering the assessor was a mh professional, she only asked two questions about his depression.
She concentrated more on his mobility issues, which we found a bit confusing.

I had my PIP f2f with a mental health nurse recently. She completely ignored my documented severe mental health issues and called them 'unremarkable' in her report. I am reporting her to the NMC and am just about to put in my MR.