The policy seems to be incoherent in the same way that the SC judged that the EA2010 could not refer to "certificated sex" as it rendered the Act incoherent.
If "Staff must treat all trans people the same as any other patient." then that surely rules out this earlier part:
"Observation of trans people which may include intimate observation, e.g. bathing, will generally be performed by a member of staff of the same sex as the trans person’s presenting gender."?
Otherwise a male staff member could excuse irregular "intimate observation" by arguing that the patient was "presenting as a man", eg. by wearing trousers or having short hair, ie. in the same way that staff are currently required to allocate patients to wards based on their "presenting gender" wrt to clothing etc. under Annex B if the patient is unable to indicate a preference:
"If, on admission, it is impossible to ask the view of the person because he or she is unconscious or incapacitated then, in the first instance, inferences should be drawn from presentation and mode of dress. No investigation as to the genital sex of the person should be undertaken unless this is specifically necessary to carry out treatment."