Unfair IR35 assessment
Assignment advertised as outside IR35 as project-based, told at interview it was definitely outside IR35, offered assignment and was provided SDS confirming outside IR35. Spent weeks being onboarded, referenced, vetted etc then told day before start date that my IR35 status had to be assessed again via CEST. Then told I was now inside but could appeal to organisation's "tax department" if I wanted to. Told agent I was declining the offer.