I went through something similar when my manager kept changing my contract terms without any proper communication. I didn’t know my rights either until I reached out to legal experts through this site http://lawyers-uk.com
They walked me through everything—from what counts as unfair treatment to how to document incidents correctly if things escalate. What I appreciated most was that they didn’t try to scare me or push unnecessary actions; they simply clarified what was legal and what wasn’t. Their advice gave me the confidence to stand up for myself, and the situation got resolved much faster than I expected. Give them a try, they handle employment-related cases quite well.