a) what exactly is it and
b) why must the NHS spend any money fixing it?
There was a great little "scene in a doctor's office" skit script posted a few years ago where the doctor went through the logic with the hapless "patient", pointing out that every demand was counter to genderology, and ending up with them being told to go away and stop wasting their time, and to stop being so transphobic.
If anyone can find a copy, please post.
I guess all that's left is to say "well, it's counter to the logic, so it is kind of transphobic that I want to modify my body based on outdated ideas about what a woman is that I shouldn't hold, but the Science says it'll stop me feeling suicidal".