gudetamathelazyegg pre-announced her unwillingness to engage after posting this, but for the record:
Bristol clearly recognise that if a trans man used their service it would not be acceptable to refer to him as a woman. Female at birth but as an adult, not a woman.
I disagree with this for two reasons - at least two reasons, but I can only think of two!
The transgender community is tiny, maybe as many as 0.5% but probably less. What is the rationale for making profound adjustments to arrangements and wording that work perfectly well for the rest of the population? Especially when those changes cause confusion by introducing a lack of clarity, in circumstances where people have enough to worry about without having to interpret circumlocutions like people with ovaries.. Why? just why?
And sorry, trans community and your allies, 'Because we say so!' is not a cogent argument.
Trans men [what percentage of the 0.5% are they??] dealing with maternity services should be fully aware that they have engaged in a course of action - becoming pregnant - that is specific to biological females, and that it is perfectly reasonable for the services to be designed around that group. If they are not fully aware of the complexities they are facing if they decide to become pregnant after 'transitioning' and presenting themselves as men, they haven't thought through the issues very well, have they?
Young women who decide they are going to be men, and takes drastic steps to present themselves as such to society, have to accept that 'living in their new gender' as men does not include the quintessentially female experience of pregnancy, and if they do decide to get pregnant, they are re-joining the group 'biological women' for whom maternity services are, very reasonably, designed.
So to answer your question gudetamathelazyegg :
Would you in all seriousness refer to a trans man as a woman to his face, if you were working in this setting?
What should you call a biological female who is pregnant in the setting of maternity services? A woman, of course, and if the transman can't understand and deal with that, she hasn't thought through how to live in her new identity very well, has she?
Incidentally, holders of GRCs have to commit to living in their acquired gender until death - so claiming to be a man, but deciding to get pregnant seems to invalidate that commitment.
edited to remove those weird random asterisks that sometimes appear...