Having assisted a number of complainants to bring complaints about registered nurses doing the exact opposite of what nurses should do: i.e. harming patients rather than helping them, it was shocking to read this: https://www.disabilitynewsservice.com/nursing-regulator-cleared-more-than-200-nurses-over-pip-and-wca-complaints/
Amongst the complaints I've seen were clear examples of nurses ignoring specialist evidence in favour of "informal observations" (i.e. looking the patient up and down and deciding if they're considered worthy of the benefit), and misrepresenting what the patient had told them in order to deliver what appeared to be a predetermined outcome. Claimants going from zero points when assessed by a nurse employed by Capita/Atos for PIP to 20+ points when specialist medical evidence available to them was actually properly considered surely indicates a problem!
The shocking revelations from Disability News Service appears to suggest nurses are immune from regulatory action when carrying out PIP and ESA assessments.