Client used IR35 as an excuse to not say thanks for helping them win an award. Been working on a contract for a firm for 3.5 years. I single handedly architected lead, recruited a front end dev and built the site (along with that other contractor).

The other day they won an award for the site. I didn't expect to be on the official thank you list (they named and thanked everyone involved) but they even excluded me and the other contractor (who granted was short term) from the internal email. Their reasons? IR35 and they're protecting me.... My rates are now being adjusted for the work I actually do!