The AI ethics argument in Britain has, until recently, been conducted at a comfortable remove: think tanks publishing reports, civil society organizations filing objections, parliamentary questions going unanswered. What is happening inside NHS trusts represents a qualitatively different mode of opposition. The people operating Palantir's Federated Data Platform are describing their daily experience of it as ethically intolerable — one official telling The Register it makes them 'feel sick every time,' another calling the platform 'ethically bankrupt.' This is not abstention or protest. It is institutional actors inside a contractually…