Some of the information in the policy is wrong/misleading.
"Some staff may voice objections towards treating trans or non-binary service users on the grounds of their religion or beliefs – this would be classed as discrimination. Managers must be prepared to deal with this in the same manner as for any other similar objection (for example on the grounds of sexual orientation), in line with the Equality, Diversity and Inclusion Policy."
This paragraph talks about discrimination, but when you actually check the Equality/Diversity and Inclusion policy:
"5.12 Providing for Cultural and Religious Needs
Where a member of staff has particular cultural and religious needs which may conflict with existing work requirements, the Trust will consider whether it is reasonably practical to vary or adapt these requirements to enable such cultural/religious needs to be met."