I've never understood why changing gender markers with the GP seems to be such an important rite of passage for children who believe they are trans.
Even the GIDS website advise children that this is what they should be doing
How do I change my name on GP Records?
There is a simple process for this, which is accepted by many government departments including the Department of Health:
the patient tells their GP, or directly informs the CCG, that they are transitioning and that in future they would be known by their new name and gender. They can write a “statutory declaration”, they may have a deed poll document, or they may simply make the request. This request should be in writing, signed by the patient
the GP writes to the Registration Office at the CCG. The GP may write a letter of support confirming the gender role change and that this change is intended to be permanent, but this is not a requirement
the Registration Office then writes to the Personal Demographics’ Service National Back Office. The National Back Office will create a new identity with a new NHS number and requests the records held by the patient’s GP. These records are then transferred to the new identity and forwarded to the GP
on receipt, the GP surgery changes any remaining patient information including the gender marker, pronouns and names
Trans patients have a legal right to change their name and gender on their NHS records and would be able to bring a civil claim against any GP or practice which I refused to accede their request.
gids.nhs.uk/young-people/