If you dutifully serve monopoly capital in the NHS, carry out any number of iatrocidal executions at their command, implicit & explicit (e.gOperation Talla) rules will protect you.
So if you actually get done for malpractice, chances are pretty good you're a threat to the bosses.
Nurse Lucy Letby remains in prison serving a life sentence for crimes she didn’t commit because her imprisonment sends a very strong message to all NHS staff who might ever consider whistleblowing. It also the demonstrates political control over the judiciary in the UK.