On this thread
https://www.mumsnet.com/talk/_chat/5572117-employer-asked-me-to-remove-posts-criticising-schools-and-home-education
There are a few posts that appear to be doxxing/trying to doxx the OP. Not sure if this is against the rules as such, but it seems like something that is inappropriate.
Not sure how to tell you what to look for on such a long thread without repeating the name, but there are a couple of posts near the bottom and you could maybe work from there?