https://www.gov.uk/employment-tribunal-decisions/h-lockwood-v-cheshire-and-wirral-nhs-foundation-trust-and-others-2401211-slash-2024-and-2407178-slash-2024
"Although the claimant has taken steps to change attributes of their sex
from female, by changing their name to a name which can be identified as of
either sex, and has changed their preferred pronouns, those are not in our
view attributes which are for the purpose of moving from one sex to the other,
they are steps in the process of moving away from the female sex to a
different gender identity, ie that of non binary. The claimant is not proposing,
nor do they intend to take any steps to reassign their sex from that of female
to male.
105. We therefore find that the claimant does not have the protected
characteristic of gender reassignment."